Philip Seymour Hoffman's death has focused the nation's attention on the resurgence of heroin in America. In this excerpt from Moyers on Addiction, recovering addicts talk about how their dependency began.

These groups are part of a global movement to stop climate change and save the planet.

Environmentalist Bill McKibben says it’s time for President Obama to stand up to oil companies and just say no.

A complex issue explained in an entertaining way.

Approving the controversial oil pipeline will top the Senate agenda as Congress reconvenes.

Watch clips from Bill's interview with David Simon, journalist and creator of The Wire in which he talks the "astonishing" rise of libertarianism, the tragedy of capitalism and why he's want push politicians to the curb.

The State Department's long-awaited environmental assessment of the Keystone XL pipeline is a disappointment for green groups like 350.org, who are now expected to step up their fight against the project.

While the president outlined important steps forward in his State of the Union, bolder solutions are needed.

Across the Golden State, communities are running out of water.

In a new essay, Bill Moyers takes on radical-right Republicans for denying the science behind evolution and climate change.