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Xringer · 10-14-11, 05:58 PM

Interesting thing in the video... Geothermal energy is actually 80% nuclear energy..

Geothermal gradient - Wikipedia, the free encyclopedia

The Earth's internal heat comes from a combination of residual heat from planetary accretion (about 20%) and heat produced through radioactive decay (80%).[2] The major heat-producing isotopes in the Earth are potassium-40, uranium-238, uranium-235, and thorium-232.[3]

10-14-11, 05:58 PM	#24
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Interesting thing in the video... Geothermal energy is actually 80% nuclear energy.. Geothermal gradient - Wikipedia, the free encyclopedia The Earth's internal heat comes from a combination of residual heat from planetary accretion (about 20%) and heat produced through radioactive decay (80%).[2] The major heat-producing isotopes in the Earth are potassium-40, uranium-238, uranium-235, and thorium-232.[3]