Yellow-cedar are dying in Alaska: Scientists now know why

Yellow-cedar, a culturally and economically valuable tree in southeastern Alaska and adjacent parts of British Columbia, has been dying off across large expanses of these areas for the past 100 years. But no one could say ...

Extreme heat increasing in both summer and winter

A new study shows extreme heat events both in the summer and in the winter are increasing across the U.S. and Canada, while extreme cold events in summer and winter are declining.

Deadly bat disease is spreading west

A disease killing more than 1 million with a mortality rate close to 100 percent continues to sweep across the country. First detected in New York in 2006, it is now found in 14 states in the East and South, leaving starvation ...

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