Ancient Earth

Green Impact New 3D model finds Earth may have become ready for life 4.33 billion years ago

Early Earth may have reached a sweet spot when cooler crust and widespread hydrothermal systems gave fragile prebiotic chemistry time to persist.

Green Impact Sea salt may have made Snowball Earth far colder than previously thought Joshua Shavit

Space Ancient asteroid breakup may have bombarded Earth and the Moon 800 million years ago Joseph Shavit