On Mon, Jul 13, 2015 at 8:34 PM, Jones Beene <[email protected]> wrote:
At one time, not too long ago - this internal heat was said to come from > uranium fission - now fission is said to be all but non-existent (compared > to decay). This Wikipedia article states something similar to what I have read elsewhere on Wikipedia, that a significant portion of the Earth's internal heat is believed to come from the decay of radioactive elements: https://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget As you suggest, this explanation gives the impression of being a mere hunch that has been advanced as something that is plausible. Eric
