Part 2 of Blog 3

Some sources of renewable energy are:
Solar energy or the energy obtained from the sun which creates electicity (Radiant heat),
Wind power which can be turned into electricity by using wind turbines,
Rain provides fresh water wich is a source of renewable energy,
Hydropower is the energy obtained from the moving water for example: tides,
Geothermal power is the energy genereted by the heat stored in the earth.
http://en.wikipedia.org/wiki/Renewable_energy#Solar_energy_use

Also, Michael Oppenheimer "is the Albert G. Mibank Professor of Geosciences and International Affairs at Princeton University. He is also the Director of the Program in Science, Technology and Environmental Policy (STEP) at Woodrow Wilson School, and Associated Faculty of the Princeton Environmental Institute and the Atmosphere and Ocean Sciences Program."
http://www.scienceschool.usyd.edu.au/index.php?page=lecturers/oppenheimer