Farmers in Asia and North America are over-using underground water reserves, risking the supply for billions of people.
The predominance of 'lefthandedness' amongst amino acids in meteorites isn't, after all, an indication of biological activity, say scientists.
With the weather we're currently getting in the UK, it's hard to believe that the Earth is short of water. But at less than one percent of the planet's total mass, there's not nearly as much of the stuff as scientists would expect.
There's a well-known experiment in which cornstarch is added to water, turning it into a rather odd substance known as oobleck.
NASA's Cassini spacecraft has come up with strng evidence that Saturn's moon Titan is hiding a layer of liquid water under its ice shell.
Parts of Mars appear to have been modified by liquid water comparatively recently, indicating that there may have been favorable conditions for life.
There's vastly more water in Mars's mantle than previously thought - as much as on Earth, in fact - dramatically raising the chances that the planet might once have sustained life.
Almost a quarter of a crater near the moon's south pole is covered with ice, scientists using NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft have found.
Clouds of snow blanket the Red Planet's poles during the dead of a Martian winter. However, unlike Earth's water-based snow, the particles on Mars are actually frozen crystals of carbon dioxide.
Lava flows coiled like snail shells have been found for the first time on Mars - and they're bigger than anything similar on Earth.
ESA’s Mars Express has discovered a series of 'pit-chains' in the Tharsis region of Mars that could, says ESA, be tempting targets in the search for microbial life.
Hydraulic fracturing of shale formations, or fracking, to extract natural gas doesn't cause groundwater contamination, a new report has found.
ESA says its Mars Express probe has returned some of the strongest evidence yet that an ocean once covered part of Mars.
Mars may have been an arid planet for over 600 million years, making it too hostile for any life to survive on the planet's surface.
One of the first creators of graphene, Professor Sir Andre Geim, has found a new use for the wonder material - distilling alcohol.
NASA's Opportunity rover has found veins of a mineral that appears to be gypsum, and which could only have been deposited by flowing water.
Waste water treatment could actually be increasing the amount of some toxins, by transforming common pain-killing drugs into more dangerous forms.
Liquid water on the Martian surface was probably never around for very long, meaning life would have struggled to gain a foothold there.
Astronomers have discovered an embryonic solar system surrounded by a cloud of water vapor that could eventually form comets and deliver oceans to dry worlds.
The moon may be a harsh mistress, but Russian scientists say they want to establish a colony below the lunar surface.