Dr James Hansen

The man who's been called the Paul Revere of climate change, Dr. James Hansen, launched his new book, "Storms of My Grandchildren," last night. His militancy has made him a lightning rod for climate change deniers.

Appalachia -- one of the few places in the country where both the cause of climate change and its solution can be found in the same location. Mountaintop removal isn't just a local issue, it's an American problem.

There's a stealth dirty oil project sneaking into the U.S. It's called the Canadian Tar Sands, or as the oil industry prefers, Canadian Oil Sands. And it's being brought to you by Sarah Palin and ExxonMobil.

Hansen opens with current climate status: the loss of sea ice, the approaching tipping points, the effects on people and wildlife, the unstoppable sea level rise, shifting of climate zones and more.

Yesterday, I testified to Congress about global warming, 20 years after I first alerted the public that warming was underway. There are striking similarities between then and now, but one big difference.