Huffington Post: If you're a male painted turtle, global warming might sound great at first: A new study suggests it will mean more females to mate with and fewer male rivals to fend off. But, as usual with climate change, every silver lining has a cloud. In this case, too many females could render the species incapable of reproducing by century's end. Painted turtles (Chrysemys picta) live in freshwater habitats across North America, where the sex of their unhatched young is determined by ambient temperature....