"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Scientists know that the world’s continents emerged during the Archean eon, which stretched from about 4 ...

For much of modern geological history, the number of continents seemed fixed and unquestioned. Yet a mostly submerged landmass in the South Pacific has disrupted that familiar picture. Zealandia, ...

Far beneath the waves of the southwest Pacific, scientists have finished charting a landmass so large and so coherent that it now stands beside Africa, Asia and the rest as a full-fledged continent.