Global warming is quickly becoming the biggest threat to the long-term survival of America’s wildlife. Average temperatures in the U.S. over the last century have already increased by more than one degree fahrenheit. Seven of the top 10 warmest years on record for the contiguous 48 states have occurred since 1998, and 2012 was the warmest year on record.
The National Wildlife Federation has released a series of reports entitled “Wildlife in a Warming World”. These reports illustrate the challenges that global warming is placing on mammals, birds, fish and wildlife habitat.