Around the world, on separate continents that had no contact with each other, multiple groups of ancient humans invented farming more or less simultaneously — and scientists still don't know how ...

World's Oldest Impact Crater Found, Rewriting Earth's Ancient History Mar. 6 ... Comet Impacts Formed Continents When Solar System Entered Arms of Milky Way Aug. 24, 2022 — New research has ...

An ancient slab of Earth's crust buried ... help researchers piece together the enormous puzzle of how Earth came to look the ...