Just read this essay on Aeon about the origins of life on Earth and how the Hadean Eon may not have lasted quite as long as previously thought. Would be a great topic to bring up with students and conduct some claim testing. The essay also complements Episode 2 of the Big History podcast and while you're there, check out Episode 3, Human Origins, which also discusses de-extinction.
Unknowns Episode 2: Origins of Life on Apple and Spotify
Unknowns Episode 3: Human Origins (new today!) on Apple and Spotify
