August 16, 2008
Wolf Bones Show Environment Change
U.S. researchers said the bones of wolves can provide scientists with a better picture of environmental change than tree rings can.
"Since the widespread combustion of fossil fuels, we have put a human fingerprint on atmospheric carbon dioxide," Joseph Bump, a forest science researcher at Michigan Technological University, said in a release. "That fingerprint shows up in trees, and it shows up in animals that eat trees, but it shows up with the least variation in the top predators."
The findings were published in the Proceedings of the Royal Society B.