Hunter-gatherers thrived in Florida for more than eight millennia before they began to make pottery around 2600 b.c., during the Late Archaic period. This invention seems to have dramatically changed ...

The Hallmundarhraun lava field—basalt dark, with great swells and a froth of white moss—looks like a stormy sea whipped into a frenzy and frozen in place. It begins under the Langjökull glacier in ...