An analysis of the scars left by long-gone flows reveals that Mars’s rivers may have run even when scientists thought the planet was drying out.

Sea snakes wait in thirst for “lenses” of freshwater forming on the surface of the ocean after a heavy rain.

Environmental groups are concerned and plan litigation.

Results of a study suggest that toxicologists should look further than exposed individuals for contaminant effects.

Data from the Indian Space Research Organization’s Chandrayaan 1 spacecraft show frost on the lunar north and south poles.

The University of Portsmouth sports scientist and open-water swimmer investigates the human body’s response to extreme conditions.

Radar data indicate that the Red Planet’s southern polar ice sheets cover a 20-kilometer-wide body of water.

Crowds of zooplankton swimming upward generate large downward jets of water, a study finds.

As Cape Town nears drying up, researchers there have come up with simple ways to dramatically cut back on water use.  

New evidence supports the idea that a drop in concentrations of the disinfectant during the town’s water crisis caused several deaths and severe illness.