It’s hard to overestimate the influence of John and Hank Green on the Internet, particularly among people my age. John (who writes books for teenagers) and Hank (who maintains the website EcoGeek and sings songs about particle physics) run a YouTube channel that celebrates nerdiness. This Internet community is now a huge part of pop culture among self-professed teenage nerds.

Hank’s new spin-off channel SciShow, which publishes videos about popular science topics, has only being going for a month but already has 90 000 subscribers and 1 million views. So I was very excited when Hank created this entertaining, polished, and wonderfully accurate video about climate change. He discusses sea level rise, anoxic events, and even the psychology of denial: