Solar lasers, ocean power and volcanoes: unusual energy sources of the future

(CNN) -- Fossil fuels are going to run out. This much we know. No one is entirely certain when they will run out exactly, but we know it will happen eventually.

Alternative Energy And Global Energy Security In Aftermath Of Rio+20

By Alexander Mirtchev, Contributor

 

“Life always gets harder toward the summit–the cold increases, the responsibility increases.” These words by Friedrich Nietzsche aptly characterize the atmosphere among global leaders at June’s international summits.