Zealandia, considered a candidate for the Earth’s eighth continent, was mostly lost to the sea. Geologists say they’ve now mapped the entire nearly two million square miles of the underwater land mass ...

Across the planet, water makes up 71% of Earth’s surface. The remaining space is covered by land — continents and islands. Before Earth’s land formed the seven continents in the present day, all the ...

Beneath nearly two million square miles of Pacific Ocean lies a landmass larger than Greenland—one that remained hidden from formal scientific recognition until 2017. Zealandia, now classified as ...