Once Upon a Time... Planet Earth Season 1 Episode 21 Alternative Energies
- TV-G
- December 21, 2008
- 23 min
Fossil fuels will run out. How to replace biomass, recycling and waste incineration, geothermal, and biofuels? With wind, hydro and solar energy. And with hydrogen, the fuel of the future as they say, even though many challenges still exist.
