By Science News, 12:51 PM September 22, 2011
Lowdown on Earth’s heat
“Science Stats” (SN: 8/27/11, p. 4) understates the power Earth radiates into space and mistakenly suggests that Earth radiates more energy from internal sources than it receives from the sun. The total (44 trillion watts) shown in your diagram must represent only the minuscule percentage (about 0.02 percent) from internal energy sources (radioactivity, tidal, remnant gravitational energy) that cause surface effects like volcanoes and plate tectonics. In fact,...
Source URL: https://www.sciencenews.org/article/letters-94?mode=magazine&context=4510