Earth

"OK, this is kind of out there and caters to your inner Uber-Geek."

The European Space Agency's new documentary short tackles the question of whether space debris has reached crisis level.

Researchers have created a "fingerprint" of a sulfur-based molecule found in space that may offer new clues about the formation of life on Earth.

Cosmic rays may play a role in triggering lightning, a new study suggests, offering an out-of-this-world answer to a long-standing mystery.

Spring officially begins today (March 20) with the vernal equinox, bringing longer days and warmer temperatures to the Northern Hemisphere.

The building blocks of life on Earth may have been fueled by tiny sparks hopping between water droplets.

"From our perspective down in the trenches actually working for the government, it feels like the people up top just have no clue about anything."

Earth's largest iceberg has run aground off the coast of South Georgia Island, a common rendezvous spot for big bergs, new satellite images show.

Natural cycles in Earth's rotational axis and its orbit around the sun drive climatic changes, and now researchers have matched up specific points in those cycles to the timing of ice ages.