The oldest rocks on Earth are more than just ancient ... an organisms life's story is the key to figuring out why our incredible living world is the way it is. Today, we're gonna explore that ...

Geologists have now unearthed evidence of a 3.5 billion-year-old crater found in a layer of Australian rock. Shatter cones, which are features caused by the shockwave of a hypervelocity meteorite ...

The rock was limestone ... The Chazy Reef is the oldest reef in the world built by a community of organisms (a few older reefs are made up of one species only). Its foundation was built by ...

(via Be Smart) The oldest rocks on Earth are more than just ancient—they’re time machines, holding clues to Earth’s missing history and revealing what happened in the unknown times after the Big Bang.