Yes and no. Yes it probably exempts us, in theory, from greenhouse gas related global warming. That said, energy generation isn't the only problem — energy tra

Yes and no. Yes it probably exempts us, in theory, from greenhouse gas related global warming. That said, energy generation isn't the only problem — energy transport is important too, and fossil fuels are still king (hard to have a tokamak in your car). Even then we only have a few more doublings before we start reaching thermodynamic limits of our planet's ability to radiate heat into space.