News
- Life
DNA hints at polar bears’ Irish ancestry
Mitochondrial genetic analysis suggests a bit o’ hybridizing long ago with brown bears on the Emerald Isle.
- Earth
Greenland’s ice sheets face new threat
Subsurface ocean warming is likely to be dramatic in that region, a new study finds.
- Earth
Sulfur stalls surface temperature rise
A new study shows how pollutants helped balance out the effects of greenhouse gases from 1998 to 2008.
- Physics
Rare earth elements plentiful in ocean sediments
The economically vital metals could be mined from the deep sea, Japanese geologists propose.
