Volcanos Melting Glaciers
I was surprised this story on volcanic activity in the Antarctic contributing to glacier melt made Yahoo News. Believers can relax. They included the obligatory mention of global warming.
One thing I've been wondering for a while is how much heat the earth itself generates? It's supposed to be super hot in the center of the earth. Some of that heat must radiate towards the surface, never mind the subterranean magma flows we know about.
I'm wondering if whatever heat the earth gives off is constant, or does it go up and down? Does anybody measure this sort of thing?