I have to laugh.  While we are constantly subjected to stories about global warming with pleas to do something, we see hydroelectric plants being shut down.  Hydroelectricity is the best of all renewables.  24/7 availablity, zero carbon emissions, infinitely renewable.  The willingness of those with power to take hydroelectric plants out of production to inevitably be replaced with fossil fuel burning plants shows why there will never ever be any meaningful action on reducing carbon emissions.