You are sitting on a giant nuclear reactor!
A recent article in R&D magazine http://www.rdmag.com//News/2011/07/Materials-Geology-Radioac tivity-What-keeps-the-Earth-cooking/?et_cid=1829552&et_rid=54740611&li nkid=http%3a%2f%2fwww.rdm reported that the evidence is fairly conclusive that the center of the Earth is in fact being partially heated by the radiation of atomic decay. At minimum, Uranium 238, Thorium 232 and Potassium 40 are decaying and probably producing about half of the 44 terawatts of heat that […]