We explore continents like Zealandia, which is mostly submerged but is considered the Earth's largest current continent, and the lost landmass of Gondwana, which once connected South America ...

For over 500 million years, something extraordinary has been hidden beneath Antarctica’s thick, icy surface. Now, scientists are more convinced than ever: another ancient mountain range lies buried ...

As for what’s next for Zealandia, Mortimer has some ideas. “While the continent is the first to be completely mapped out to its submarine edges, much exploration and discovery remains.