Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

New Antarctica map reveals a landscape of hidden valleys and channels beneath ice, improving sea-level rise and ice flow ...

In a landmark study published in Science, researchers have unveiled a high-resolution map of the Antarctic bed. This study ...

Picture Antarctica not as a smooth, frozen plain, but as a rugged world of mountains, valleys, and deep channels buried beneath kilometers of ice. That unseen landscape is now coming into focus.