Keystone XL would mean Canada gets the money, China (or some other foreign buyer) gets the oil and the U.S. gets the pollution.
With a major snowstorm hitting the Pacific Northwest, a look at the Seattle area's snowfall history.
A major winter storm is affecting the Pacific Northwest with high winds, heavy snow and rain, and frigid temperatures.
La Niña events may make conditions more favorable for pandemic flu outbreaks, according to a new study.
Washington, D.C. is vulnerable to even minor amounts of sea level rise, which according to some studies is virtually guaranteed.
A major winter storm is on tap for the Pacific Northwest, bringing paralyzing amounts of snow to the Seattle area, and welcome snow to Northwestern ski areas.
A new study finds a link between a rapidly warming Arctic and cooler winters in the eastern U.S.
What does the new EPA greenhouse gas emissions database show? We break down some interesting facts.