Why (Almost) Everything on Earth is Solar-Powered

This week, Nathan from Europe wrote in: I have a question about the theory that energy can neither be created nor destroyed.If you have two waterfalls, and one has a turbine and the other doesn't, yet the water eventually hits the ground with the same volume and force on both, have you not created energy with the turbine? Nathan, So energy hasn't been created in this case, only redirected. When the water falls onto the blades of a turbine, the water slows down, and the turbine's blades speed up....