Uploaded October 2025 | Updated September 2026, 2 weeks ago

---

Use code scishow at incogni.com/scishow to get an exclusive 60% off.

You might take it for granted, but the human ability to walk on two legs is pretty special. It's been argued that basically everything we can do today stems back to the time our ancestors decided to start walking upright, so researchers want to know everything we can about it. And here's the story of how one tiny fossil toe from a hominin called Ardipithecus ramidus upended decades of research into bipedalism.

Hosted by: Hank Green (he/him)
----------
Support us for $8/month on Patreon and keep SciShow going!
patreon.com/scishow
Or support us directly: complexly.com/support
Join our SciShow email list to get the latest news and highlights:
https://mailchi.mp/scishow/email
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Jaap Westera, Alex Hackman, Blood Doctor Kelly, Toyas Dhake, Matt Curls, Piya Shedden, Jason A Saslow, Kevin Knupp, J.V. Rosenbalm, Garrett Galloway, Steve Gums, David Johnston, Bethany Matthews, Chris Curry, Chris Peters, Chris Mackey, Jeremy Mattern, Adam Brainard, Kevin Bealer, Alan Wong, Joseph Ruf, Lyndsay Brown, Cye Stoner, Jp Lynch, Eric Jensen, Friso
----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: scishow-tangents.simplecast.com
TikTok: tiktok.com/@scishow
Instagram: instagram.com/thescishow
Facebook: facebook.com/scishow
Bluesky: https://bsky.app/profile/scishow.bsky.social

#SciShow #science #education #learning #complexly
----------
Sources:
docs.google.com/document/d/e/2PACX-1vS2-kdAW8tjDZ6Sb_MrobH9v1gZ-4PbXw30zt91Gjk6XmM_zomewnLB4CMfCahtSK00XV78IHEqfRV7/pub