Planet Earth

Fresh water that trickled down into Earth's crust 6 million years ago became trapped thousands of feet beneath the Hyblaean Mountains in Sicily, forming an aquifer that has not budged since.

Supervolcanoes are defined by their ability to produce supereruptions — explosions of more than 240 cubic miles of volcanic material. But scientists disagree on how useful the term is.

At the current emissions level, there is a 50% chance that global warming will exceed 1.5 degrees Celsius consistently in about seven years, new research suggests.

A strange type of glass that was discovered in 1933 in the Libyan desert may come from a meteorite, an analysis shows, but impact crater is still missing.

Humans will likely die long before our planet does.

In the furthest, deepest reaches of the ocean, there is a watery graveyard where the world's satellites and space stations go to rest.

An underwater volcano that gave birth to a new island off Japan's Iwo Jima island has erupted again, sending huge plumes of ash and smoke into the sky in footage released by Japan's Coast Guard.

A 2,000-foot-long hydrothermal field teeming with life and giant chimneys spouting boiling water has been discovered next to an underwater volcano off the coast of Ecuador.

NASA has revealed a new false-color image of Alaska's Malaspina Glacier that highlights several recent findings about the massive ice mass.

A new paper claims that the ozone hole above Antarctica is getting deeper, suggesting that it is not healing as expected. However, other researchers say the study's results are misleading.