Educated as a chemist, I have been brainwashed to believe the first law of thermodynamics:  energy can be neither created nor destroyed.  (Many chemistry texts still state the first law in this way, as if it were brought down from a mountain on a stone tablet.)   There are many sites on the internet devoted to the search for forms of cheap or free energy.  My thoughts and experiments can be found below.

Cold Fusion

Steam Engine I

Steam Engine II

Free Energy

Global Warming :-)