None, of course, at least not over non-geological time periods.
I think my point was that the planet deals, on a routine basis, with heat loads 6,666 times larger than our entire race dumps doing everything that generates heat.
For God's sake, don't give the environmentalists any more ideas. They've already defined combustion of any kind as pollution by its very nature. If they define as evil any process that generates heat as a byproduct, we're dead.