Water

NASA's James Webb Space Telescope has detected potential traces of dimethyl sulfide, a chemical only known to be created by phytoplankton on Earth, in the atmosphere of an exoplanet believed to have its own liquid ocean.

One researcher hypothesizes that experiments carried out by NASA's Viking landers in 1976 could have inadvertently killed microbes living in Martian rocks. Other experts are skeptical.

A patchwork of polygon-shaped cracks in ancient Martian mud are evidence of past wet-dry cycles, which could have helped extraterrestrial life emerge on the Red Planet.

The magma that erupts from basaltic volcanoes in the middle of tectonic plates originates from within Earth's mantle — rather than from the outer crust — and is propelled upward by CO2, not water.

Water extinguishes fire, but it doesn't act on the flames themselves.

Groundwater extracted for irrigation and other human activities displaced 2,150 gigatons of water between 1993 and 2010.

How much water a fish drinks depends on the saltiness of its surroundings.

The unrest may be due to slight changes in pressure or in the amount of water seeping into the underground reservoir system.

One, four or five? Not all experts agree on the number of oceans on our planet.

Researchers think it could be down to where these crocs are hanging out.