Today, Mars is known as the red planet, for its rust-colored desert landscape. Once upon a time, Mars was a very different ...

Nearly 3.7 kilometers beneath the Greenland Sea, scientists have stumbled on a hidden landscape of icy methane and dense ...

The goal should be a new golden rule linking the search for life elsewhere to the spread of life beyond the bounds of Earth.

In the South China Sea, near the Paracel Islands, the aqua-colored waters of an expansive shallow reef platform suddenly ...

TOKYO – Alligator weed, an invasive plant species native to South America, is spreading in rivers and lakes in Japan. The ...