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Michael Shellenberger

Michael Shellenberger (born June 16, 1971) is an American author, journalist, and environmental policy advocate who has focused on energy innovation, nuclear power promotion, and critiques of exaggerated environmental claims. He co-founded the Breakthrough Institute in 2003 to advance ecomodernist approaches emphasizing human progress through technology and founded Environmental Progress in 2016 to support nuclear energy preservation and challenge anti-nuclear policies worldwide. Shellenberger gained recognition as a Time magazine "Hero of the Environment" for his early activism and later authored Apocalypse Never: Why Environmental Alarmism Hurts Us All (2020), which argues that alarmist rhetoric distorts data on resource scarcity, biodiversity loss, and climate impacts, thereby undermining practical solutions like abundant energy access. In recent years, he has exposed government pressures on social media platforms through contributions to the Twitter Files, internal documents revealing content suppression and coordination with federal agencies, and founded Public in 2023 as a platform for investigative journalism on censorship, mental health crises, and policy failures.

Biography

Early life and education

Michael Shellenberger was born on June 16, 1971, in . He grew up in a Mennonite family and attended a Quaker school, influences that aligned with his early involvement in peace activism. Shellenberger earned a Bachelor of Arts degree in Peace and Global Studies from , a Quaker-affiliated institution in , graduating in spring 1993. He then pursued graduate studies at the , where he received a in in 1996. These academic focuses reflected his initial interests in and cultural dynamics, though he did not complete a doctoral degree.

Professional Career

Environmental activism and organizational roles

Shellenberger entered environmental in the late and early , focusing on campaigns that emphasized economic opportunity and technological solutions over traditional tactics. He contributed to the formation of the Apollo , a coalition endorsed by labor unions and aimed at advancing clean energy policies through job creation and innovation, though it faced opposition from some environmental groups prioritizing anti-fossil fuel measures. In 2004, Shellenberger co-authored "The Death of Environmentalism" with Ted Nordhaus, an essay arguing that mainstream environmental organizations had become ineffective by relying on fear-based narratives rather than inspiring visions of human progress and abundance. The document, presented at a meeting of environmental funders, urged a shift toward policies promoting , alleviation, and energy abundance to address ecological challenges. Shellenberger co-founded the Breakthrough Institute in 2003 with Nordhaus, serving as its president until 2015. The organization promoted "," advocating for intensive human development, including and , as means to decouple from . Under his leadership, the institute influenced policy debates by critiquing intermittency and supporting research into high-yield and to spare . In 2016, Shellenberger established Environmental Progress, an independent nonprofit research group headquartered in , where he served as founder and president until at least 2024. The organization's mission centered on achieving human prosperity alongside natural preservation, with activism centered on reviving to combat and emissions—efforts that included campaigns to prevent reactor shutdowns in (2016), (2017), and other regions, preserving over 10 gigawatts of zero-emission capacity. Shellenberger's role involved international advocacy, such as supporting nuclear restarts in and testifying before U.S. congressional committees on energy reliability.

Energy policy and nuclear advocacy

Shellenberger founded Environmental Progress in 2016 as an independent research and policy organization dedicated to advancing as a means to achieve human prosperity, energy abundance, and climate stabilization. Initially an anti-nuclear environmental activist who promoted renewables in the 2000s, he publicly reversed his stance around 2015, citing empirical evidence that provides the most reliable, land-efficient, and compared to and , which face scalability limits due to and material demands. In his November 2017 TEDxBerlin talk, "Why I Changed My Mind About Nuclear Power," he argued that opposition to nuclear, driven by exaggerated fears of accidents like and , has hindered global development, noting that nuclear has prevented over 2 million deaths since 1971 through displacement of fossil fuels. Through Environmental Progress, Shellenberger has emphasized 's safety record, with death rates from generation at 0.03 per terawatt-hour, far below (24.6) and even (0.44) when accounting for full lifecycle impacts including rooftop installations. He advocates for as essential for alleviation in developing nations, pointing to France's 70% mix enabling low emissions (under 0.05 kg CO2 per kWh) and affordable energy since the 1970s, in contrast to Germany's post-2011 phase-out, which raised emissions by 10-15% via increased reliance. Shellenberger critiques renewable-heavy policies for land overuse— and wind requiring 75-360 times more land than for equivalent output—and for driving up costs, as seen in California's 300% price hike since 2000 amid shutdowns and renewable mandates. Shellenberger has testified before U.S. congressional committees over a dozen times since 2017, urging policies to preserve and expand the domestic fleet of 93 reactors, which supply 20% of U.S. electricity and 50% of carbon-free power. In his March 11, 2021, testimony to the Senate Committee on Energy and Natural Resources, he warned that premature closures, like those subsidized in states such as and without federal offsets, undermine and grid reliability, recommending tax credits and streamlined licensing to match natural gas's cost-competitiveness. His September 15, 2022, House testimony advocated expansion for and , projecting that advanced reactors could deliver electricity at under $30 per megawatt-hour with innovations like small modular designs. In a 2021 IAEA Bulletin , Shellenberger outlined seven strategies for affordable deployment, including factory-built reactors, regulatory reforms to reduce delays (e.g., France's Flamanville overruns from 5 to 12 years), and public-private financing akin to South Korea's standardized builds achieving 90% capacity factors. He positions as aligned with environmental goals, arguing that anti- activism, often rooted in fears rather than data, has ceded clean leadership to , which commissioned 50 gigawatts of since 2010 while the U.S. added none until recent approvals. Shellenberger's advocacy extends internationally, supporting in forums like Spain's Foro Nuclear in 2019, where he stressed its role in preventing warming beyond 1.5°C while enabling universal access.

Journalistic investigations

![Michael Shellenberger testifying on UAP investigations][float-right] Shellenberger contributed to the Twitter Files, a series of internal Twitter documents released by Elon Musk starting in December 2022, which exposed content moderation practices, including government influence on suppressing the New York Post's October 2020 story on Hunter Biden's laptop. His threads detailed FBI communications with Twitter executives, algorithmic biases favoring certain narratives, and the platform's handling of the January 6, 2021, Capitol events. These revelations, drawn from thousands of emails and Slack messages, highlighted collaborations between federal agencies and tech firms to flag and demote content deemed misinformation, particularly around the 2020 U.S. election and COVID-19 origins. As founder of , a nonprofit investigative journalism outlet launched in 2021, Shellenberger has published reports on the "censorship-industrial complex," alleging coordinated efforts by U.S. government entities, universities, and NGOs to influence platforms. In 2023 and 2024 congressional testimonies, he presented evidence from leaked documents showing USAID-funded programs targeting domestic speech under the guise of combating foreign , including partnerships with outlets like the and Reporting Project to shape narratives on elections and . These investigations claimed violations of First Amendment principles through indirect censorship mechanisms, such as funding fact-checkers and pressure campaigns. Shellenberger's 2024 reporting on alleged the existence of secret U.S. government programs retrieving non-human craft and biologics, based on whistleblower accounts and declassified materials. Testifying before on November 13, 2024, he cited specific incidents, including a 2018 encounter and recovered materials defying known physics, arguing for to address risks from potential adversarial recoveries. His work extended prior investigations into deforestation, revealing discrepancies in satellite data and NGO reporting that overstated rates to secure funding, as detailed in peer-reviewed analyses and fieldwork from 2018 onward.

Intellectual Contributions

Ecomodernist framework and manifestos

Shellenberger, as co-founder of the Breakthrough Institute in 2003 alongside Ted Nordhaus, advanced ecomodernism as an environmental philosophy emphasizing technological innovation to decouple human economic development from ecological degradation. This framework posits that intensive land use, advanced agriculture, nuclear energy, and urbanization can reduce humanity's environmental footprint while enabling prosperity and biodiversity preservation, contrasting with views prioritizing natural limits or degrowth. Shellenberger argued that historical trends, such as agricultural intensification freeing land for rewilding—evidenced by global forest regrowth since 1900 despite population growth—demonstrate decoupling's feasibility through human ingenuity rather than restraint. In April 2015, Shellenberger co-authored An Ecomodernist Manifesto, signed by 18 scholars and advocates including Nordhaus, Stewart Brand, and Ruth DeFries, which crystallized these ideas. The document advocates a "good Anthropocene" where technology intensifies resource production to spare wilderness, rejecting Malthusian fears of overpopulation and resource scarcity as empirically unfounded given 20th-century yield improvements in food and energy. It calls for policies accelerating nuclear power deployment—citing its low land use and emissions—and genetic engineering for crops, while critiquing anti-nuclear opposition as ideologically driven rather than evidence-based. Shellenberger's ecomodernist contributions through the Breakthrough Institute extended to reports quantifying how modern practices, like high-yield farming, have halved the land needed for global food production since 1961, allowing habitat recovery in regions such as the and . The framework prioritizes causal mechanisms like energy abundance enabling —correlating with lower fertility rates and environmental pressures—over alarmist narratives, drawing on data from sources like the showing declining deforestation rates in developed nations. Critics from perspectives contested the manifesto's optimism, arguing it underestimates biophysical constraints, but Shellenberger maintained that empirical trends validate technology's role in reconciling human advancement with nature.

Critiques of environmental alarmism

Shellenberger contends that environmental alarmism distorts scientific realities and fosters counterproductive policies by exaggerating threats like climate catastrophe, mass extinctions, and . In his 2020 book Apocalypse Never: Why Environmental Alarmism Hurts Us All, he marshals empirical data to demonstrate that humanity has made substantial progress in mitigating environmental pressures through and , such as increased agricultural yields that have produced food surpluses 25% above global needs despite . He attributes much alarmism to a revival of debunked Malthusian predictions of overpopulation-induced , noting that rates have fallen globally and has declined from 42% of the world's population in 1980 to under 10% by 2015, enabling better resource management. A core critique targets narratives, where Shellenberger argues that while warming occurs, apocalyptic framing ignores human adaptability and data showing no worsening of disasters on a basis; for instance, global area has decreased by 25% since 2003 due to improved fire suppression and . He highlights policy harms, such as —responsible for averting over 1.8 million deaths annually—claiming alarmism prioritizes symbolic gestures like plastic straw bans, which address only 0.03% of ocean plastic, over scalable solutions that could decarbonize energy systems efficiently. In a June 2020 public apology, he expressed regret for contributing to fear that has induced nightmares in one in five children and depressed emissions reductions in developing nations by restricting use needed for poverty alleviation. Shellenberger also challenges extinction alarmism, disputing claims of a "sixth mass extinction" driven by human activity; IUCN assessments indicate just 0.8% of 112,432 evaluated have gone extinct since 1500, equating to fewer than two per year, with models from reports like IPBES overpredicting losses through unverified assumptions rather than observed . Wildlife populations have declined about 50% from 1970 to 2010, but he attributes this primarily to habitat conversion for like charcoal rather than or fossil fuels, advocating intensified and to spare —evidenced by reduced global farmland for meat production equivalent to an area nearly the size of . On and plastics, he argues fears overlook net gains, such as Earth's 5% greening since the 1980s from CO2 fertilization per , and the life-saving benefits of plastics in , where bans exacerbate waste issues in poor nations without addressing root causes like inadequate infrastructure. Overall, Shellenberger posits that erodes public trust in science and diverts resources from pro-human innovations like and , which have safely powered development while reducing environmental footprints.

Analysis of urban decay and progressive policies

Shellenberger posits that progressive governance in , particularly in , has accelerated through policies that tolerate disorder rather than enforcing accountability and addressing root causes like and mental illness. In San Fransicko: Why Progressives Ruin Cities (2021), he analyzes how ideological commitments to "" and have fostered environments where public spaces deteriorate into open-air drug markets, littered with human waste and needles, while businesses flee due to unchecked and . He attributes this not to inevitable but to causal failures in policy design, where leniency signals permission for antisocial behavior, eroding social norms and inviting further breakdown. Central to his critique is the crisis, which Shellenberger frames as predominantly a treatable behavioral issue rather than a housing shortage. Drawing on local surveys, he notes that the majority of unsheltered individuals in —approximately two-thirds—exhibit severe substance use disorders or untreated mental illnesses, with rates of chronic at 50% and hard at 40% among the homeless population. Despite expenditures exceeding $1 billion annually on homelessness programs from 2018 to 2021, the unsheltered population in grew by over 20%, correlating with policies like "," which provides permanent housing without preconditions for sobriety or treatment. Shellenberger cites longitudinal data showing 's high failure rate, with many participants relapsing and returning to streets, and contrasts it with jurisdictions emphasizing shelters and enforcement, where homeless mortality drops threefold compared to models like '. He argues that progressive advocacy, often rooted in academia's aversion to stigmatizing , ignores evidence from randomized trials demonstrating better outcomes from conditional approaches requiring behavioral change. On crime, Shellenberger links to prosecutorial reforms and Proposition 47 (2014), which reclassified certain thefts and drug offenses as misdemeanors, reducing felony arrests by 27% and contributing to a surge in retail theft organized to fund habits. In , progressive Chesa Boudin's policies—such as declining to charge 40% of felony cases and prioritizing diversion over incarceration—enabled repeat offenders, with data showing violent recidivists committing multiple crimes before rearrest. This tolerance, Shellenberger contends, created a feedback loop: unpunished (often under $950 thresholds) normalized disorder, driving chains like to shutter stores and exacerbating economic stagnation. Boudin's 2022 recall, which Shellenberger supported, preceded policy shifts under successor , including stricter charging; while early fluctuated, overall declines of 22% in violent offenses by late 2025 reflect a pivot toward accountability. Nationally, he references voter backlash via California's Proposition 36 (passed November 2024), which partially reverses Prop 47 by mandating treatment for repeat drug offenders, signaling empirical repudiation of prior leniency. Shellenberger's analysis emphasizes causal realism over correlative narratives favored by some institutions, which attribute decay solely to while downplaying incentives for dysfunction. For instance, despite California's 12% of U.S. population hosting half the nation's homeless, states with stricter enforcement and treatment mandates show lower per capita rates, underscoring that enabling behaviors through non-enforcement sustains visible decay. He advocates alternatives like Portugal's paired with compulsory treatment, adapted to U.S. contexts via expanded conservatorships and shelter beds, arguing these restore public order without coercion's moral hazards. sources, such as university-affiliated critiques, often defend citing select studies but overlook aggregate failures in retention and cost-effectiveness, where billions yield minimal sustained . Ultimately, Shellenberger views revival as achievable through evidence-driven governance prioritizing compulsion for the severely impaired, as evidenced by post-recall improvements in San Francisco's street conditions and business reopenings.

Major Publications

Early works on environmentalism

Shellenberger's initial prominent publication on environmentalism was the 2004 essay "The Death of Environmentalism: Global Warming Politics in a Post-Environmental World," co-authored with Ted Nordhaus and presented at the Environmental Grantmakers Association conference in October 2004. The essay contended that the environmental movement had stagnated by framing issues like global warming in apocalyptic terms without articulating aspirational goals or effective political strategies, leading to policy failures despite decades of advocacy. It drew on data showing limited progress in emissions reductions and public support, attributing this to the movement's reliance on doom-laden narratives rather than evidence-based solutions emphasizing human prosperity. The essay provoked intense backlash and discussion among environmental leaders, with critics accusing it of while proponents viewed it as a necessary reckoning with the movement's ideological constraints. Shellenberger and Nordhaus supported their analysis with historical examples, such as the stalled negotiations and stagnant funding outcomes from major environmental foundations between 1990 and 2004. Building on this, Shellenberger and Nordhaus expanded their critique in the 2007 book Break Through: From the Death of to the of Possibility, published by Houghton Mifflin. The work advocated shifting from a "politics of fear and limits" to one promoting , , and abundance as pathways to environmental protection, citing evidence from post-World War II prosperity eras where human development correlated with improved ecological outcomes. It proposed reframing around positive visions, such as economic expansion from resource depletion through advancements in energy and , and included case studies like the Green Revolution's role in reducing pressures. These early works laid the groundwork for Shellenberger's later ecomodernist ideas, emphasizing empirical trends like declining global rates (from 42% in 1980 to under 10% by 2007) as enabling factors for rather than inherent threats.

Apocalypse Never (2020)

: Why Environmental Alarmism Hurts Us All is a 432-page book published by on June 30, 2020. In it, Shellenberger, drawing from his decades as an environmental activist who co-founded organizations to protect redwoods and advocate for early versions of a , argues that apocalyptic narratives about and other ecological threats exaggerate dangers, misrepresent scientific data, and obstruct practical solutions such as and . He contends that such , often fueled by psychological needs for meaning, financial incentives for advocacy groups, and status-seeking among elites, diverts attention from real progress like declining and improved human . Shellenberger presents empirical evidence to support his thesis that environmental conditions have improved substantially despite and industrialization. For instance, he notes that deaths from events have fallen by 80% over the past 40 years, even in developing nations, due to advancements in , infrastructure, and that enhance . He highlights that carbon emissions in most developed countries peaked and began declining over a ago, from through efficiency gains and shifts to cleaner sources like . On biodiversity, Shellenberger cites showing the Earth is greener today than 35 years ago, with increased vegetation cover from CO2 fertilization and agricultural intensification that spares . He argues that alarmist opposition to technologies like and has prolonged reliance on less efficient alternatives, harming both people and the planet by keeping billions in . The book advocates for "," emphasizing human ingenuity, innovation, and abundance over scarcity-based conservation. Shellenberger asserts that wealthier societies invest more in , as evidenced by cleaner air and water in high-income nations, and that prioritizing in poor countries reduces birth rates and more effectively than top-down restrictions. He critiques the for contributing to Germany's increased use after phasing out reactors, which raised emissions, and praises fracking's role in slashing U.S. emissions through cheap displacing . , in his view, fosters that undermines public support for pragmatic policies, such as adapting to sea-level rise via dikes rather than futile emission cuts that ignore developing-world growth. Reception was polarized, with the book achieving national bestseller status. Climate scientist Tom Wigley described it as "the most important book on the environment ever written," while Harvard psychologist praised its advocacy for "constructive environmentalism." MIT's Kerry Emanuel and historian also endorsed its science-based approach to rescuing environmental discourse from zealotry. Critics from alarmist-leaning outlets, such as Yale Climate Connections, faulted it for alleged scientific errors and underplaying climate risks, though Shellenberger's data on disaster mortality and emission trends align with reports from organizations like the and . The book's challenge to institutional environmental narratives drew accusations of denialism from outlets like , which viewed its emphasis on and as insufficiently urgent.

San Fransicko (2021)

San Fransicko: Why Progressives Ruin Cities is a 2021 book by Michael Shellenberger that examines the visible crises of , open drug use, mental illness, and in and other Democrat-led American cities. Published on October 12, 2021, by , the work draws on Shellenberger's three decades of residence in the , where he initially supported of drugs and initiatives before concluding that such policies had unintended negative consequences. The author attributes these urban decays not primarily to economic factors like housing shortages, but to a progressive ideology emphasizing unconditional compassion over personal responsibility, which he argues enables and antisocial behavior rather than resolving them. Shellenberger presents empirical evidence from city reports and federal data to support his thesis, including a rise in San Francisco's reported incidents from about 1,000 in 2011 to over 28,000 by 2019, alongside increases in overdose deaths and property crimes amid policies like safe injection sites and non-enforcement of minor offenses. He critiques the dominant "" model, which prioritizes providing permanent housing without preconditions like sobriety or psychiatric treatment, noting that despite San Francisco spending over $1 billion annually on by 2021—enough to house all unsheltered individuals multiple times over—the unsheltered population remained around 4,000-5,000 in point-in-time counts, with high recidivism rates in due to unchecked affecting 42% of the local homeless population per 2019 surveys. Shellenberger contends this approach ignores causal factors like untreated (prevalent in 25-30% of chronic cases) and addiction, which drive 70-80% of in affected cohorts according to his analysis of longitudinal studies, rather than migration or affordability alone. In proposing alternatives, Shellenberger advocates "" strategies, including for the severely mentally ill, mandatory treatment for addicts, and aggressive policing of public disorder, citing successes in jurisdictions like under Giuliani's broken windows policing in the , which reduced by 60% through enforcement, and Finland's "" variant that incorporates treatment mandates. He argues these methods restore public spaces and motivate recovery by enforcing social norms, contrasting them with San Francisco's permissive environment that, per city data, saw overdose fatalities surge 1,000% from 2015 to 2020 amid expansions. The book received praise from conservative and centrist outlets for highlighting policy failures and human suffering, with reviewers like noting its vivid documentation of street-level devastation as a corrective to optimistic narratives. However, critics, including those from institutions like UCSF, contested Shellenberger's minimization of housing costs, arguing that California's median rents exceeding $3,000 monthly displace locals into , and accused him of cherry-picking data while overlooking studies showing 60-70% of homeless individuals becoming so after becoming unhoused in their current region. Such critiques often emanate from sources invested in paradigms, which receive federal funding tied to the model, potentially biasing evaluations against alternatives requiring enforcement. Despite debates, the book's release coincided with growing public backlash, influencing discussions in San Francisco's mayoral race and subsequent policy shifts toward encampment clearances.

Political Involvement

Endorsements and ideological evolution

Shellenberger, a longtime environmental activist and registered , disaffiliated from the party in 2021, citing its adoption of what he termed a psychologically damaging "pity narrative" toward , racial gaps, and , as well as broader embrace of "wokeism" and victim ideology. His ideological evolution reflects evidence-based revisions to earlier positions: initially skeptical of as a young radical, he became a vocal proponent after analyzing global energy data, safety records, and the role of reliable baseload power in reducing emissions and . On , Shellenberger shifted from advocating and needle exchanges in the —aligned with harm-reduction approaches—to supporting mandatory treatment and enforcement by the 2020s, attributing surges in overdose deaths (over 100,000 annually in the U.S. by 2022) and urban homelessness to permissive progressive experiments, such as California's 47 and Oregon's Measure 110. This progression culminated in Shellenberger's self-description as ideologically liberal on compassion, libertarian on personal freedoms, and conservative on preserving civilization, informed by firsthand observations of policy failures in cities like , where he documented over 30,000 homeless individuals amid rising deaths (from 53 in 2017 to 745 in 2021). He ran for as an in the June 7, 2022, primary, qualifying for the ballot with over 1.2 million signatures but receiving only 15.3% of the vote, positioning himself against Democratic incumbent without formal party backing. Shellenberger has not issued prominent candidate endorsements, maintaining an independent stance; however, he publicly welcomed Robert F. Kennedy Jr.'s August 2024 endorsement of , noting its potential electoral impact based on polling data showing shifts among independents and Kennedy supporters. Post-2024 election analyses from Shellenberger highlighted Democratic defeats as a necessary "wake-up" to internal " bullying" and policy missteps, signaling his ongoing critique of left-leaning institutions without aligning explicitly with Republicans.

California gubernatorial campaigns

Shellenberger announced his independent candidacy for on March 13, 2022, following his departure from the the previous year. His platform centered on reversing what he described as failed policies contributing to , particularly in addressing , mental illness, and through expanded and shelter enforcement rather than encampment tolerance or . He also promoted expansion to achieve reliable, low-emission , critiquing reliance on intermittent renewables and imports amid 's blackouts and high costs. Additional priorities included , reduced regulations to boost housing construction, and tougher enforcement against retail theft and street disorder. Campaigning as a centrist to both major parties, Shellenberger highlighted his environmental background and data-driven critiques of policies like Proposition 47, which reduced penalties for certain thefts and drug offenses, arguing they exacerbated crime and disorder. He raised funds through small donors and received endorsements from figures like executive Antonio Gracias, while facing criticism from Democrats for aligning with conservative talking points despite his progressive roots. In California's top-two primary on June 7, 2022, Shellenberger garnered 284,664 votes, equivalent to 4.1% of the total, finishing third behind incumbent Democrat (56.2%) and Republican (17.5%). This result prevented his advancement to the November , where Newsom defeated Dahle decisively. Shellenberger conceded the primary but framed his performance as evidence of voter dissatisfaction with one-party dominance in the state.

Public Advocacy and Testimonies

Congressional testimonies on policy issues

Shellenberger testified before the U.S. House Select Committee on the Climate Crisis on July 28, 2020, critiquing proposals for heavy investment in sources like and , arguing they would impose high costs on consumers and fail to deliver reliable power without sufficient baseload options such as . He highlighted data showing that renewables require extensive and backup systems, increasing overall expenses, and referenced his prior support for similar policies in the 2000s that underperformed in reducing emissions. On August 5, 2020, he appeared before the House Committee on Natural Resources, emphasizing the risks of making scarce and expensive through restrictive policies, which he claimed disproportionately harm developing nations by limiting access to affordable fossil fuels and essential for and food production. In testimony to the Senate Committee on Energy and Natural Resources on March 11, 2021, Shellenberger advocated retaining the existing U.S. fleet, citing its role in providing low-carbon, dispatchable and warning that premature retirements would raise electricity prices and emissions as gas plants fill the gap. He presented evidence from global data showing nuclear's safety record and efficiency compared to alternatives. Addressing the 2021 Texas grid failure, Shellenberger testified before the House Committee on Energy and Commerce on April 19, 2021, attributing vulnerabilities to over-reliance on intermittent renewables and insufficient , rather than solely weather extremes, and recommended diversified energy mixes including nuclear for grid resilience. On September 15, 2022, during a House Oversight Committee hearing on combating climate misinformation, Shellenberger defended open debate on energy policies, arguing that suppressing dissenting views on renewables' limitations hinders effective solutions and cited examples of censored accurate critiques of and intermittency. Shellenberger's March 9, 2023, testimony before the House Select Subcommittee on the Weaponization of the Federal Government detailed government agencies' coordination with tech platforms to censor content on policies, elections, and climate narratives, presenting internal documents from the showing pressure from entities like the FBI and to suppress information deemed misinformation. He argued this violated First Amendment principles and distorted public policy discourse. Before the Homeland Security and Governmental Affairs Committee on September 14, 2023, he testified on governance, warning that proposed regulations risked enabling further by empowering bureaucrats to define "harmful" content, and advocated for minimal to preserve and free speech in development. In April 2023, testifying to the Budget Committee, Shellenberger promoted widespread access as a humanitarian priority, linking energy abundance—via and —to reduced heat-related deaths, and critiqued policies prioritizing emission cuts over human welfare in hot climates.

Claims on unidentified aerial phenomena (UAP)

Michael Shellenberger has claimed that the U.S. government possesses evidence of demonstrating advanced technology potentially of nonhuman origin, which has been concealed through secret programs evading . In his November 13, 2024, testimony before the Oversight and Accountability Committee's subcommittees on Cybersecurity, , and Government Innovation, and , the , and Memorial Affairs, Shellenberger alleged that the of () and Community () violate statutes such as 10 U.S.C. § 119 and 50 U.S.C. § 3093 by withholding UAP-related from . He attributed these assertions to whistleblower accounts, declassified documents, and historical records, criticizing official reports like the (AARO)'s March 2024 historical review for flaws and omissions. Shellenberger highlighted alleged secret Unacknowledged Special Access Programs (USAPs), including "Immaculate Constellation," purportedly established in 2017 by the to retrieve and exploit without notifying , involving private contractors like and . He submitted a whistleblower report detailing this program, which described first-hand encounters, including a 2023 incident where an F-22 evaded a , and claimed the program holds retrieved craft exhibiting capabilities beyond known human technology. Other programs he referenced include , Blue Fly, and Preserve Destiny for recovery and , often linked to facilities like Wright-Patterson AFB and underground sites. Among specific incidents, Shellenberger cited the 2004 "Tic-Tac" encounter off , where radar tracked performing maneuvers defying physics, and historical crashes like Roswell in 1947, involving retrieved nonhuman bodies and materials with anomalous properties, as per witnesses such as Sgt. Frederick Benthal and Stephen Lovekin. He also referenced nuclear site intrusions, such as orbs over Dyess AFB in 1973, and Kecksburg 1965 debris analyzed in withheld Battelle studies. These claims draw from sources including David Grusch's 2023 testimony and Victor Marchetti's accounts of 1970s recoveries. Shellenberger advocated for legislative measures to enforce UAP transparency, including defunding concealment efforts and mandating disclosure, arguing that secrecy undermines public safety and by prioritizing cover-ups over threat assessment. has denied evidence of extraterrestrial technology or crash retrieval programs, maintaining in its March 2024 AARO report that no verifiable nonhuman artifacts exist. His allegations, while supported by cited whistleblowers, remain unverified by independent empirical confirmation and contrast with official denials from entities.

Controversies and Reception

Scientific and environmental debates

Shellenberger contends that exaggerated claims of climate catastrophe, or "," undermine and divert resources from proven solutions like and , which he argues have already driven down deaths from climate-related disasters by 98% over the past century despite population growth. He acknowledges as real and supports emissions reductions through and but rejects declarations of crisis or emergency, emphasizing that human adaptability, including through s enabling , has historically mitigated environmental harms more effectively than restrictions on development. In his 2019 talk, Shellenberger highlighted renewables' limitations, such as high land use and intermittency requiring backups, arguing they cannot fully replace without increasing costs and emissions elsewhere. A core element of Shellenberger's environmental advocacy centers on , which he promotes as the most scalable, low-carbon technology with the lowest land footprint and death rate per terawatt-hour among major sources—far safer than or when accounting for and accidents. He has debated anti- environmentalists, such as NRDC's Dale Bryk, asserting that opposition to , often rooted in irrational fears post-Chernobyl and , blocks the path to decarbonization in developing nations where kills millions annually via indoor and disease. According to IPCC data cited by Shellenberger, generates one-quarter of global , outperforming renewables in reliability and emissions avoidance. He founded Environmental Progress in to advance pro-nuclear policies, influencing restarts like California's Diablo Canyon plant in 2022. Critics from advocacy circles, including a 2020 Yale Climate Connections review of , charge Shellenberger with "deeply and fatally flawed" science, alleging he downplays sea-level rise risks, misrepresents IPCC projections, and ignores compounding effects like . Feedback analyzed his claims as mixing accurate data on trends with misleading simplifications that overlook long-term warming thresholds, such as 2°C beyond pre-industrial levels. Shellenberger rebuts these as ideologically driven, pointing to peer-reviewed studies confirming declining fatalities and arguing that alarmist narratives, amplified by media and NGOs, prioritize fear over evidence of progress through abundance rather than . He maintains that empirical metrics—global greening from CO2 fertilization and nuclear's role in averting emissions equivalent to all other sources combined—validate a ecomodernist approach favoring human ingenuity over de-growth.

Political and media criticisms

Shellenberger has drawn political and media criticism from progressive outlets and activists for his critiques of mainstream environmental narratives, particularly in Apocalypse Never (2020), where he argued that climate alarmism exaggerates risks and distracts from practical solutions like . Outlets such as Yale Climate Connections labeled the book as containing "bad science and bad arguments," accusing it of downplaying the urgency of warming despite Shellenberger's acceptance of the on human-caused temperature rise. Similarly, Climate Feedback described his claims, including that " is not making worse," as misleading and overly simplistic, contradicting evidence of increased disaster intensity in peer-reviewed studies. In political testimony and writings, Shellenberger's assertions linking climate alarmism to youth mental health declines have been attacked by environmental groups as advancing skepticism, with DeSmog portraying him as a " star witness" who undermines public support for aggressive decarbonization. Critics from left-leaning , including Drilled , have framed his positions as a form of "denial by delay," alleging selective use of data to prioritize and over emission cuts. The Guardian reported that his 2020 public "apology" for past environmental scares unsettled former supporters, drawing conservative praise while prompting accusations of ideological from circles. On social policies, Shellenberger's San Fransicko (2021) and gubernatorial campaign proposals faced backlash from Democratic activists and media for opposing "" models that provide shelter without requiring sobriety or treatment, with decrying his emphasis on and enforcement as "clueless" and dismissive of structural factors like . UCSF researchers criticized his analysis as abandoning housing affordability as the primary driver of in favor of behavioral interventions. , a publication, attacked his "Cal-Psych" plan to involuntarily treat and potentially relocate severe cases as a "sinister" overreach that stigmatizes the unhoused rather than addressing root causes. During the 2022 campaign, these stances positioned him as a target for progressive ire, with noting opposition from Newsom-aligned activists who viewed his independent run as enabling right-leaning critiques of Democratic governance.

Personal Life

Family and residences

Shellenberger was raised in by Mennonite parents. He attended a Quaker school and later earned a degree in peace and global studies, reflecting his early involvement in peace activism. Shellenberger is married to Helen Jeehyun Lee, a sociologist. The couple has children, including at least one son. Shellenberger resides in , where he has lived for over 30 years, including with his wife at their home there.

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    May 30, 2025 · Michael Shellenberger is an American author, journalist, and environmental policy advocate born on June 16, 1971.
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    Michael Shellenberger co-founded the Breakthrough Institute with Ted Nordhaus in 2003. He left the Breakthrough Institute in 2015 and founded Environmental ...
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