This video examines a moment in Earth’s history when environmental change occurred far faster than expected. Geological and ...
A massive meteorite strike 3.5 billion years ago left behind the world’s oldest known impact crater, challenging previous ...
Our species likes it cold. Homo sapiens evolved in — and still inhabits — one of Earth’s rare and fragile ice ages, periods distinguished not by an abundance of saber-toothed cats and woolly mammoths ...
A new analysis of computer simulations of Earth’s magnetic field suggests that its behavior was different early in Earth’s history, resulting in greater stability and fewer reversals of the magnetic ...