Add Yahoo as a preferred source to see more of our stories on Google. Across the planet, water makes up 71% of Earth’s surface. The remaining space is covered by land — continents and islands. Before ...

Scientists have revealed that two continent-size regions in Earth's deep mantle have distinctive histories and resulting chemical composition, in contrast to the common assumption they are the same. A ...

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 ...