evolution

Resources drive pika responses to climate

November 7, 2019

American pikas are considered to be particularly vulnerable to climate change due to the high alpine regions that many of them occupy. Biologists have believed that ...

Ravens turn evolution on its head

April 5, 2018

Two lineages of the common raven (Corvus corax) in western North America have been fusing for thousands of years, researchers found, in what they say is one of the ...