Canada

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 ...

Morphing mice respond to warming climate

December 13, 2017

Fifty years ago, two species of mice looked different than they do today, and the likely cause is the warmer winters they’re experiencing, according to new ...
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