"The earth is not going to run out of heat"<br>Tom, it's 2020... Don't write it off just yet.,(reply>), @Tim Robb Luckily the heat generated from the core of the Earth is one thing we 100% cannot use up and run dry. You'd have to blow up the planet with a death star to get rid of the heat.,(reply>), Anyone remember the movie The Core?,(reply>), Considering the human ability to alter our environment to extract any resource we require, and the speed that we increase this at, I honestly wouldn't be surprised if we end up "draining" the Earth "dry" of its heat in a few hundred years. Probably for something dumb too, as it always is. Never underestimate human idiocy and its destructive potential.,(reply>), And... we've probably got an alien problem on our hands as well (the whole venus PH3 thing),(reply>), i mean... global warming is technically heat... so he’s right in that respect