SciShow

SciShow was created by Hank Green and John Green through their production company Complexly, launching on YouTube in 2012. While the Green brothers provided the founding vision, the channel operates with a team of writers, researchers, and hosts rather than centering a single on-camera personality.

Complexly is the production studio behind SciShow and its related channels. Co-founded by Hank and John Green, Complexly operates as an independent educational media company and also produces CrashCourse, SciShow Space, SciShow Kids, and several other properties.

In mid-2023, Hank Green publicly announced he had been diagnosed with Hodgkin's lymphoma, a type of blood cancer. He shared the news across his personal channels and later provided updates on his treatment progress, with Hodgkin's lymphoma generally carrying a favorable prognosis when caught early.

SciShow covers a broad range of scientific disciplines including biology, chemistry, physics, earth science, and the history of science. Individual videos typically focus on a single question or phenomenon, using a fast-paced explainer format designed to make complex concepts accessible to a general audience.

Yes — the SciShow franchise includes several dedicated sub-channels: SciShow Space covers astronomy and space exploration, SciShow Psych focuses on psychology and cognitive science, and SciShow Kids targets younger audiences. Each channel maintains the same explainer format as the flagship.

Recent sponsors include Brilliant (interactive STEM learning), Zocdoc (online medical appointment booking), 80,000 Hours (career-impact nonprofit), DeleteMe (personal data removal), and Squarespace (website building). These integrations typically appear as mid-roll or end-card segments within YouTube videos.

Yes — SciShow shares its founding lineage with VlogBrothers, the original YouTube channel Hank and John Green launched in 2007. Complexly grew out of that community, and SciShow retains organic ties to the Nerdfighteria audience, though it functions as a standalone educational brand with its own distinct following.

SciShow's engagement rate runs well above the education category median, which is a meaningful distinction given that larger channels typically see engagement dilute as subscriber counts grow. Sustaining above-baseline engagement at Mega scale indicates a consistently active core viewership rather than a passive subscriber base.

Yes — SciShow maintains an active TikTok presence with around one million followers, adapting its science-explainer format into short-form vertical video. The TikTok account posts condensed versions of scientific facts and phenomena, extending the channel's reach to audiences who primarily consume content on mobile short-form platforms.

SciShow's combined following across platforms sits at approximately 9.4 million, with the large majority concentrated on YouTube (roughly 8.4 million subscribers) and the remainder on TikTok. This total does not include the additional audiences of the SciShow sub-channels, which operate as separate properties.