Unfrozen mystery: Water reveals a new secret
Using revolutionary new techniques, a team led by Carnegie's Malcolm Guthrie has made a striking discovery about how ice behaves under pressure, changing ideas that date back almost 50 years. Their findings ...
Ancient trapped water explains Earth's first ice age
Tiny bubbles of water found in quartz grains in Australia may hold the key to understanding what caused the Earth's first ice age, say scientists.
A ghostly 'ladder' in Saturn's F ring
Saturn's F ring is certainly a curious structure. Orbiting the giant planet 82,000 kilometers above its equatorial cloud tops, the F ring is a ropy, twisted belt of bright ice particles anywhere from 30-500 ...
Researchers document acceleration of ocean denitrification during deglaciation
As ice sheets melted during the deglaciation of the last ice age and global oceans warmed, oceanic oxygen levels decreased and "denitrification" accelerated by 30 to 120 percent, a new international study ...
10 years on, Europe salutes its Martian scout
It was built on a relative shoestring, was completed in just five years and was designed to survive for just 687 days. Ten years later, after more than 12,000 swings around the Red Planet, Europe's Mars ...
Cassini finds hints of activity at Saturn moon Dione
(Phys.org) —From a distance, most of the Saturnian moon Dione resembles a bland cueball. Thanks to close-up images of a 500-mile-long (800-kilometer-long) mountain on the moon from NASA's Cassini spacecraft, ...
Study explores atmospheric impact of declining Arctic sea ice
There is growing recognition that reductions in Arctic sea ice levels will influence patterns of atmospheric circulation both within and beyond the Arctic. New research in the International Journal of Climatology explores the im ...
Study provides better understanding of water's freezing behavior at nanoscale
The results of a new study led by George Washington University Professor Tianshu Li provide direct computational evidence that nucleation of ice in small droplets is strongly size-dependent, an important conclusion ...
Scientists sound alarm at Arctic Ocean's rapid acidification
Scientists expressed alarm on Monday over the rapid acidification of the Arctic Ocean caused by carbon dioxide emissions, which could have dire consequences on the region's fragile ecosystem.
Scientists use salt marshes to analyse global sea-level rise
(Phys.org) —The world's salt marshes could hold the key to predicting future sea levels after scientists used them to pinpoint when recent rises began.
Diatoms explain release of CO2
(Phys.org) —Scientists have found unexpectedly high concentrations of opal, a mineral containing silicate, in marine sediments during the transition periods from ice ages to warm phases. The explanation ...
Researchers contend increase in Antarctic sea ice due to summer melt
Saturn is like an antiques shop, Cassini suggests
(Phys.org) —A new analysis of data from NASA's Cassini spacecraft suggests that Saturn's moons and rings are gently worn vintage goods from around the time of our solar system's birth.
Swedes mystified by seal pup found in forest
A seal pup was found in a forest in eastern Sweden on Sunday almost six kilometres (four miles) from the closest body of open water, raising questions as to how it got there, Swedish media reported.