You don't need to be a climatologist to do research on global warming.  I've been researching it for over 20 years and he is spot on.  We are headed for a world where scarcity of food and water, ecosystem collapse and mass species extinction will be the norm.  As I write this approx. 20 million people are dying of starvation in three countries in the horn of Africa due to drought which brought on famine.  This is real and it's going to get real ugly.  There are climate refugees all over the planet that are having to leave their homelands as they no longer can support communities.   Wake up, folks!  Denial is decreasing our chances of having a decent way of life for humans and all other life on this small planet possible.  ALL of the Academy of Sciences are in agreement that this is happening and human caused. What can we do?  Encourage birth control, living and buying local & organic, call/write your legislators to pass laws where it's mandatory to live sustainably.