The left has always favored Thomas Jefferson over Alexander Hamilton -- but not only was Hamilton more progressive for his time, he has lessons for our response to climate change.

Watch the entire first episode of the Emmy Award-winning Showtime documentary series with Don Cheadle, Thomas Friedman and Katharine Hayhoe.

On Sunday, September 21st, a march to bring attention to the climate change crisis will kick off a week of climate events in New York City. Here’s what you need to know.

Christian and climate scientist Katharine Hayhoe talks to Bill about ending the gridlock between politics, science and faith.

The Audubon Society urges Americans to address "the root cause of the problem — global warming."

1.2% of the GDP. That's all it would take to green the economy.

On this September 11th anniversary, we revisit a 2001 speech by Bill just weeks after the attack.

Christian and climate scientist Katharine Hayhoe talks to Bill about ending the gridlock between politics, science and faith. Watch the preview.

This three-minute video shows the history of carbon pollution -- and what it's costing us today.

'Climate change is one of the gravest crises our planet has ever faced,' said Bristol County DA Sam Sutter. 'In my humble opinion, the political leadership on this issue has been gravely lacking.'