Go see the movie and read the book.
This is very real and quite scary. Things need to change or we will all die in an unexpectedly short amount of time.
Although their website is still a work in progress, Nature's Future is probably the best environmental group in the world for contributing your time and money to in an effort to fight global warming and to support and repair bio-diversity.
They do real work and they don't screw around with your donations.