Alone among known planets, Earth has vast oceans on its surface and its landmasses are marked with lakes and extensive river drainage systems. Water is the biosphere's lifeblood, and without it, Earth ...

Scientists reconstructed 540 million years of sea level changes, showing Earth's oceans rose and fell by hundreds of feet ...

The Arctic Ocean is a vast and pristine expanse that has long been a defining feature of the planet, but now it stands on the ...