What will humanity leave behind? In this episode, Professor Hannah Fry and VSauce's Michael Stevens explore the traces humans leave behind and what those traces reveal about how we think. From Tranquility Base, where humanity's first footprints on another world still sit undisturbed in lunar dust, to a three million year old pebble that may represent one of the earliest signs of symbolic thought, they uncover how ordinary objects can become extraordinary windows into our past. Why would one of our ancestors carry a rock that looked like a face? Who owns the artefacts we leave beyond Earth? And what might future generations learn from our footprints, tools, jokes, habits, and settlements scattered across the Solar System? ------------------ For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit ⁠⁠https://cancerresearchuk.org/restisscience⁠⁠ Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ. ------------------- Attribution for images used, no changes have been made. W. Bulach - https://creativecommons.org/licenses/by-sa/4.0 Jerzy Strzelecki - https://creativecommons.org/licenses/by/3.0 Rakot13 - https://creativecommons.org/licenses/by-sa/3.0 Museum of Human Evolution - https://creativecommons.org/licenses/by-sa/4.0 Robert G. Bednarik - https://creativecommons.org/licenses/by-sa/4.0 ------------------- Video Editor: Oli Oakley Animator: Sam Benson Video & Social: Bex Tyrrell Assistant Producer: Lucy Lipscombe Producer: Simona Rata Senior Producer: Lauren Armstrong-Carter Head Of Digital: Samuel Oakley Exec Producer: Neil Fearn