Manatees
dying from the cold weather.
Cold weather can weaken manatees' immune systems and eventually kill them. State officials said 2010 has been a deadly year for the beloved animals: between Jan. 1 and Dec. 17, 246 manatees died from so-called "cold stress." During the same time period in 2009, only 55 manatees died from the cold. In 2008, only 22 manatees succumbed to chilly temperatures.
Manatee deaths documented from Jan. 1 through Dec. 5 are nearly double the five-year average for that time period, according to Florida Fish and Wildlife Conservation Commission statistics.
There you have it, proof positive of a warming planet. (Caused by the evils of men, of course) :P