12 National Parks At Risk

And global warming is the cause. I still don't know how anyone can disagree that we have any effect.

(Reuters)The report released by the council and the Rocky Mountain Climate Organization stressed the connection between global warming and environmental damage at the parks, including the loss of specific wildlife, and called on the U.S. government to cut greenhouse gas emissions significantly in 10 years.

The report blamed global warming for threatening grizzly bears, an iconic species in Yellowstone Park.

Are there cycles in the rise and fall of temperatures? Yes, but the problem is that the highs keep getting higher and the lows don't go low enough.