Scientific American had a paper a year or so ago about natural nuclear reactors I think in what is now Turkey. These burned out thousands of years ago but existed because uranium and some other element occurred in the same geology close together and formed a pile.
I think I recall that. How's about The Nuclear Heart of the Earth?
In addition, I have read that there is evidence for a sudden rush of fresh water into the Gulf of Mexico which occured at the approximate end of the last ice age.
This was not a slow stream, but a sudden outpouring of water. An event heating the atmosphere over the Great Lakes could have caused this.
Yup. We have a GGG post on that somewhere...now, if we can get SunkenCiv to use his excellent search capability to find it...
maybe this one?
Scientific maverick's theory on Earth's core up for a test
SF Chronicle | Monday, November 29, 2004 | Keay Davidson
Posted on 12/05/2004 2:17:28 PM EST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1294934/posts
I read about one of these which was found in Africa near Mt. Kilimanjaro