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Complexly

Complexly is an American online video and audio production company founded in 2012 by brothers Hank Green and John Green, specializing in educational content that aims to lower barriers to knowledge building. Headquartered in Missoula, Montana, and Indianapolis, Indiana, the company produces series such as Crash Course, SciShow, and PBS Eons, which collectively have amassed over 5 billion views on YouTube and more than 55 million subscribers across social media platforms as of 2022. Originating from Hank Green's environmental blog EcoGeek and the brothers' early YouTube vlogs starting in 2007, Complexly evolved into a studio with over 60 staff members, including CEO Julie Walsh Smith, focusing on making complex scientific, historical, and cultural topics accessible through engaging formats. Its mission emphasizes enhancing human understanding as a core goal, reflected in over 10,000 videos that promote enthusiasm for learning without notable institutional biases overshadowing empirical educational aims.

History

Origins and founding (2007–2012)

Complexly's origins trace back to 2007, when brothers and initiated the YouTube channel as part of a personal experiment called "Brotherhood 2.0." On January 1, 2007, Hank posted the inaugural video, proposing that the siblings forgo text-based communication for one year in favor of weekly video exchanges on the nascent YouTube platform. This project unexpectedly garnered a dedicated audience, fostering the "" community centered on intellectual curiosity and philanthropy, with early videos amassing views and spawning initiatives like the , a drive launched later that year. Hank Green, who had been pursuing interests in environmental science, established EcoGeek LLC around this time to support his blog focused on green technologies and sustainability. Operating initially from Missoula, Montana, EcoGeek provided a foundational structure for Hank's online endeavors, blending blogging with emerging video content as Vlogbrothers' success demonstrated the viability of educational and entertaining digital media. The brothers' collaboration grew organically, with John contributing from his base in Indianapolis, Indiana, leveraging their respective expertise—Hank in science communication and John in literature and history—to explore complex topics through accessible formats. By 2012, the momentum from enabled the formalization of their production efforts into Complexly, initially under the EcoGeek umbrella, as an educational media company dedicated to lowering barriers to knowledge. That year, they launched , a science-focused series hosted by , and Crash Course, a curriculum-aligned video series covering subjects like history and , marking the shift toward structured, high-production-value content used in classrooms worldwide. These initiatives reflected a commitment to evidence-based explanation and , building on the informal origins while establishing Complexly's core mission of producing videos that encourage viewers to "think complexly" about the world.

Expansion and key milestones (2013–2020)

Following its establishment in 2012, Complexly broadened its educational content portfolio by producing additional series under the Crash Course banner, including hosted by in 2013 and subsequent courses in physics and . In 2014, the company entered a partnership with to produce The Art Assignment, a series exploring creative processes and art-making assignments, which ran until 2020. These efforts built on the initial success of Crash Course and , contributing to growing viewership and establishing Complexly as a key player in online educational media. A significant expansion targeted younger audiences with the launch of Crash Course Kids in February 2015, featuring simplified and content hosted by for elementary school students. In 2017, Complexly partnered with to debut Eons on June 26, marking its first major collaboration for paleontology-focused videos examining Earth's life history over billions of years, hosted by figures including Kallie Moore. This partnership highlighted Complexly's capacity for specialized, expert-driven content production. By 2018, Complexly diversified into audio with the premiere of SciShow Tangents on November 13, a weekly podcast hosted by Hank Green and SciShow team members discussing quirky scientific research in a competitive format, distributed by WNYC Studios. The company also launched its own YouTube channel in May 2018 for themed playlists, one-off videos, and series pilots. Through these developments, Complexly scaled operations, reaching 51 full-time employees by 2020 and accumulating over 5 billion YouTube views across channels like Crash Course (13.2 million subscribers) and SciShow (7 million subscribers).

Recent developments and leadership transitions (2021–present)

In May 2023, Complexly co-founder and then-CEO publicly announced his diagnosis with Hodgkin's lymphoma, a form of blood cancer, following the discovery of swollen lymph nodes during a routine medical examination. underwent treatment, which he documented in subsequent videos, noting the cancer had not metastasized beyond its origin but required aggressive intervention. This health challenge prompted reflections on his leadership role and operational sustainability at Complexly, as later described it as a pivotal low point influencing company decisions. In response to Green's diagnosis and to ensure continuity, Complexly underwent significant leadership changes in October 2023. Julie Walsh Smith was promoted to acting CEO, a role she assumed to guide the company's educational video and audio productions amid the transition. Simultaneously, Gabriel Blanco was appointed as Complexly's first , tasked with overseeing content strategy for series like Crash Course and . Walsh Smith, who had previously managed operations and production on projects including Crash Course, transitioned to permanent CEO by , focusing on scaling creator-owned media initiatives while maintaining the founders' vision. Green remained involved as a founder and content creator post-treatment, with the company reporting stable output of over a dozen channels amassing billions of views. By 2025, Complexly had stabilized under the new leadership structure, emphasizing independent operations and partnerships for educational content, such as annual Learnathons and merchandise releases like themed calendars highlighting scientific milestones. No further major executive shifts were reported, with the company continuing to prioritize accessible despite broader industry challenges in creator monetization.

Organizational structure

Founders and leadership

Complexly was co-founded in 2012 by brothers and , who had previously launched the YouTube channel in 2007 as a means of communicating while living apart. , who initiated the video blogging project, took on early operational leadership, including co-founding related ventures like and , and spearheading educational series such as Crash Course. , a #1 New York Times bestselling author known for works like , contributed creatively, notably as co-creator of Crash Course, but focused more on content ideation than day-to-day management. Hank Green initially served as , guiding the company's expansion into educational media production. In October 2023, following his Hodgkin's lymphoma diagnosis, the promoted Julie Walsh Smith to acting CEO to ensure continuity, with her role later solidified as . Walsh Smith, with a background in , nonprofit administration, and educational content production, oversees strategic operations and mission alignment. The leadership team also includes Gabriel Blanco as , appointed in 2023 to direct storytelling and production strategy; Kelsey Savage as , managing sponsorships and partnerships with prior experience at ; Jenn Marrow as vice president of finance and operations; and Haley Catton as director of people operations, focusing on team development. The founders remain involved in high-level guidance, though operational control has transitioned to professional executives amid the company's growth.

Operations and headquarters

Complexly maintains its headquarters in Missoula, Montana, at 3011 American Way. The company operates as a privately held media production entity, specializing in educational videos, YouTube content, podcasts, and related initiatives. With a team exceeding 70 employees, Complexly's operations encompass content creation across disciplines such as science, history, and literature, involving roles like producers, editors, designers, and creative directors. Staff are distributed across multiple locations, including Missoula; Washington, D.C.; New York; Los Angeles; and Toronto, enabling collaborative production for online platforms. Daily operations focus on developing and distributing series like SciShow and Crash Course, with oversight from executives including CEO Julie Walsh Smith and Chief Creative Officer Gabriel Blanco. Production emphasizes educational outreach, leveraging YouTube for global dissemination while maintaining a lean, project-oriented structure.

Business model

Funding and revenue sources

Complexly generates revenue through a diversified model centered on digital media production, primarily via advertising, corporate sponsorships, and direct viewer support. from YouTube's partner program constitutes a significant portion, derived from pre-roll ads, mid-rolls, and other placements across its channels, though creators receive a fixed share regardless of view counts amid fluctuating ad rates. Sponsorships involve integrated promotions in episodes, produced by experts to align with educational content, targeting brands seeking placements. For many shows, approximately 30% of funding originates from crowdfunding platforms like , supplementing ad and sponsor income to sustain production. Specific series benefit from grants by philanthropic organizations; for instance, Crash Course expansions have received PBS Foundation grants supported by The Arthur Vining Davis Foundations and . Collaborations such as Ours Poetica with the indicate additional targeted funding for poetry-focused content. Merchandise sales through the Complexly store provide ancillary revenue, though ads and sponsorships have faced declines in recent years. The company maintains operational sustainability by allocating portions of channel earnings, such as from , toward new projects after charitable distributions. As a entity, exact figures remain undisclosed, but estimates place annual income in the tens of millions, reflecting its scale with over a dozen channels and billions of cumulative views. This model emphasizes non-advertising streams to mitigate platform dependency, though challenges persist in balancing educational integrity with commercial viability.

Production philosophy and partnerships

Complexly's production philosophy emphasizes the value of engaging with the world's as a pathway to personal and collective growth, prioritizing the iterative process of inquiry and understanding over absolute finality. Content creation focuses on producing accessible, high-quality educational videos that cultivate across diverse subjects, including , , and , by leveraging a multidisciplinary team of writers, animators, and producers to translate expert knowledge into compelling formats. This approach underscores accuracy and enthusiasm, with scripts developed by subject matter experts to ensure factual integrity while appealing to broad audiences through online platforms like . Central to this philosophy is a to free, widely available educational media, supported by strategic partnerships that align with content standards without compromising . Complexly collaborates with brands on sponsored episodes, where partners fund videos on topics ranging from to historical events, but production remains guided by internal experts and creators to maintain educational value and . These sponsorships enable the sustenance of ad-free or minimally intrusive content, reflecting a model that balances commercial viability with mission-driven output. Key institutional partnerships include a longstanding collaboration with , exemplified by the 2017 launch of the PBS Eons series, which Complexly produces to examine Earth's paleontological history through weekly episodes hosted by experts like . Additional alliances, such as with the Described and Captioned Program (DCMP), enhance accessibility by incorporating audio descriptions into flagship series like Crash Course and , thereby extending reach to visually impaired audiences while upholding production rigor. These relationships demonstrate Complexly's emphasis on scalable, inclusive dissemination of verified knowledge.

Active productions

Video series

Complexly produces educational video series primarily distributed on YouTube, focusing on , , , and related fields to make rigorous topics accessible to broad audiences. These series emphasize clear explanations, expert hosts, and visual aids, with many incorporating partnerships like those with or . As of 2025, the company maintains over a dozen active channels, accumulating billions of views collectively. Crash Course, launched in 2012, offers concise courses on diverse subjects including , , , and , with hosts like and guest experts delivering 10-15 minute episodes. The series has produced more than 45 full courses, supplemented by miniseries and adaptations like Crash Course Kids for elementary-level science and Crash Course en Español for Spanish-speaking viewers. SciShow, originating in 2012, covers scientific discoveries, myths, and curiosities through short-form videos hosted by figures such as and Stephanie Stevens. It has spawned spin-offs including SciShow Kids, targeting children with hands-on experiments; SciShow Psych, examining psychological research; and SciShow Space, focusing on astronomy and . Additional series include Bizarre Beasts, which highlights unusual animal adaptations and behaviors; Healthcare Triage, hosted by pediatrician Aaron Carroll to analyze medical evidence and policy; Journey to the Microcosmos, narrated by to showcase microscopic organisms via footage; and PBS Eons, a co-production exploring and evolutionary history. In January 2025, Complexly introduced Ask Hank Anything, a monthly Q&A series where addresses viewer-submitted questions on , , and personal topics, airing on the last Wednesday of each month. Study Hall, in collaboration with and , provides college-preparatory content like Psychology 101 and math foundations, some eligible for transferable credits.

Audio series

Complexly produces a limited number of audio series, primarily that extend its educational and conversational content from video formats. These include advice-oriented and science-focused programs hosted by company founders Hank and John Green or their collaborators. , launched in 2015, is a weekly in which brothers Hank and John Green respond to listener-submitted questions with humorous and occasionally earnest advice on topics ranging from personal dilemmas to philosophical queries. The series has produced over 420 episodes as of 2025 and emphasizes wit alongside reflections on mortality, often incorporating themes of and self-improvement. SciShow Tangents, which began in 2018, features biweekly episodes hosted by alongside Ceri Riley and Sam Schultz, presenting competitive trivia-style discussions on scientific topics to showcase obscure facts and foster . The podcast adopts a lighthearted, knowledge-sharing format derived from the video series, with episodes typically running 30-45 minutes and covering subjects like , physics, and . These audio series are distributed through platforms like Apple Podcasts and Spotify, often supported by Complexly's membership model via Supercast for bonus content, and align with the company's goal of accessible education through engaging narrative delivery.

Former and ceased productions

Productions no longer affiliated

The Financial Diet, a YouTube series focused on personal finance and lifestyle advice targeted primarily at millennial women, was originally produced as part of Complexly starting around 2015. In September 2019, host and founder Chelsea Fagan announced a professional separation from Complexly co-founder Hank Green, allowing the series to transition to full independence under its own entity. This move enabled greater autonomy in content direction and monetization, with the channel continuing to grow its subscriber base beyond 800,000 by emphasizing practical financial education free from broader educational media constraints. Sexplanations, an educational series on hosted by clinical sexologist Dr. , was produced by Complexly through at least 2018, featuring short-form videos aimed at demystifying sexual health topics. The channel, which garnered over 700,000 subscribers during its affiliation, has since operated independently, with Doe maintaining creative control and funding through platforms like , reflecting a shift away from Complexly's production oversight.

Ceased productions

100 Days was a video series produced by Complexly in 2017, featuring hosts and Chris Waters documenting their personal 100-day fitness and health improvement challenge. The series concluded after completing the 100-day period, with the final reflections posted around mid-2017, marking the end of new episodes due to its finite format. SciShow Tangents, an audio podcast launched by Complexly in collaboration with Studios, featured hosts , Ceri Riley, and Sam Schultz discussing science topics in a competitive, trivia-style format every other Tuesday. Production ceased after the final episode aired on March 18, 2025, as announced by the team in January 2025, citing a shift in resources to other Complexly projects like Ask Hank Anything. Truth or Fail originated as an early Complexly in March 2009, where participants guessed the true statement among two facts presented by hosts. The series was discontinued after a limited run of episodes due to high production costs and underperformance in YouTube's recommendation algorithms, preventing sustained viability. Later iterations under adapted the format but remained separate from ongoing Complexly output.

Impact and reception

Educational influence and audience reach

Complexly's YouTube channels collectively reach tens of millions of subscribers, with content accumulating billions of views. Crash Course, one of its flagship series, has 16.1 million subscribers, over 1,500 videos, and more than two billion views. , focusing on science explanations, has approximately 8.2 million subscribers and over 2.1 billion views across nearly 4,000 videos. SciShow Kids, targeted at younger audiences, adds 1.48 million subscribers. In total, Complexly's productions exceed 30 million subscribers and 4.8 billion views as reported in 2023, reflecting sustained growth in audience engagement. The company's content exerts educational influence through integration into formal and informal learning environments. Videos from series like Crash Course are utilized by teachers, students, and self-directed learners worldwide, with 65% of Crash Course viewers accessing material independently rather than through enrolled classes. Complexly partners with academic institutions, such as , to enable college credit via YouTube-based courses, a expanded in 2023 to broaden access. Ongoing collaborations include coproductions with ASU on research topics like restoration, aired via in 2025. Additional partnerships, such as with the Described and Captioned Media Program for audio-described accessibility and for series like Eons, enhance content availability for diverse learners. Founders Hank and John Green are listed among top education influencers, underscoring Complexly's role in online learning dissemination since its 2012 inception with and Crash Course.

Criticisms and controversies

Complexly has faced employee criticisms regarding compensation and workplace culture. Reviews on indicate an overall rating of 3.6 out of 5, with 56% of employees recommending the company to a friend, though specific complaints highlight salaries below industry standards and limited advancement opportunities. One anonymous review described pay as "abysmal" and accused senior leadership of fostering "toxic and abusive working environments," with allegedly favoring management over employee concerns. A 2022 Reddit discussion in the nerdfighter community criticized Complexly for offering entry-level salaries around $40,000 for positions requiring degrees or experience, while using nonprofit-style recruitment language despite being for-profit, and mandating relocation to , where housing costs strain low earners. These claims contrast with defenses noting competitive pay relative to Missoula's median household income of approximately $50,000 and included benefits like and matching. Content from Complexly's channels has drawn accusations of inaccuracy or oversimplification. A 2016 thread faulted the Crash Course series for declining quality and factual errors, attributing it to pretentiousness in presentation. More recently, a September 2025 video titled "Why Do People ?" sparked backlash from the online knitting community for allegedly minimizing the craft's historical depth, technical skill, and cultural significance, portraying it as a simplistic rather than a complex discipline. Critics argued the episode dismissed knitters' expertise, leading to widespread pushback; issued an apology on September 18, 2025, acknowledging the oversight and committing to better representation of skilled crafts. No formal investigations or lawsuits have stemmed from these content disputes, and Complexly maintains its educational mission emphasizes accessible explanations over exhaustive depth.

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