from 4hiroshimas.com
Our climate is absorbing a lot of heat. When scientists add up all of the heat warming the oceans, land, and atmosphere and melting the ice, they find our climate is accumulating 4 Hiroshima atomic bombs worth of heat every second.
Since 1998, our climate has absorbed about 2.4 billion Hiroshima bombs worth of heat. Check out the app at the 4hiroshimas.com website. Clearly, this heat is not coming from a few hundred nuclear steam plants, or even from all the fossil fuel we're burning. The vast bulk of it comes from the sun.
The human race and all its technology simply cannot produce this kind of heat. But it can alter the atmosphere so that the sun's heat is prevented from being radiated into space.