The glaciers I marveled at on my backpacking trip have shrunk considerably, and even then they were a pale approximation of what they once were.
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A stand of dead whitebark pine atop Packsaddle Peak in Montana, killed by an infestation of mountain pine beetles. (Kate Sheppard)
On a cold, o...
This is the first time that the federal government has declared a widespread tree species in danger of imminent extinction because of climate change.
When the Obamas visit Yellowstone National Park, they will witness the beauty for which it is known. Sadly, though, they'll also witness firsthand the domestic ravages of global warming.
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