whatever people do 'fucks' up the environment in some way, no matter how good some sort of energy is versus another. Dams heat the water, kill fish, and prevent flooding. Nuclear plants are cool, but also heat up water, kill fish, and might blow up. Coal power plants spew shit into the air, but coal is cheap. Humans will go extinct one day just like the dinosaurs, and by using up earth's resources quicker, we are just speeding up our demise.