The rare fossil hints that differences in plumage may explain why some Cretaceous-era birds survived an asteroid impact but others died.
The rare fossil hints that differences in plumage may explain why some Cretaceous-era birds survived an asteroid impact but others died.
Scarred blood vessels may be one clue to APOE4’s Alzheimer’s risk 
When climate change brings the heat, what happens to a mighty redwood? 
How the Grand Canyon could have lost 1 billion years of geologic history 
Here’s a look at the Nobel Prizes for science 
Kilauea’s display is revealing why volcanoes spew like a fountain show 
An experimental drug kills fat cells, rather than shrinking them 
Security Council LIVE: Syria’s fragile transition – economic strain, Israeli incursions and progress towards elections 
Colombia peace deal must endure as insecurity grows, Security Council hears 
General Assembly adopts pandemic declaration, but not by consensus 
Dollar System Eroding Slowly, but Still Dominant