In the whole history of Earth's climate, few events are as extreme as those that geologists call "Snowball Earth." ...
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 ...
For decades, climate science has treated Earth’s shifting crust as a slow, distant backdrop to the drama of global warming. New research is rewriting that script, showing that the way continents drift ...