Saving the land one footfall at a time.
A conversation about a new documentary, its provocative claims—and the facts it leaves out.
Colleges, pension funds and foundations together have trillions of dollars that could be invested in solutions to climate change.
Innovative land management could replenish wetlands and limit flood damage.
Climate change and its political repercussions.
What would it mean if we were to walk in his footsteps?
James Hansen bravely told the truth even when the Bush administration tried to silence and penalize him.
Four decades ago, he spoke out bravely against the Vietnam War. Will he show the same courage today, in helping to end the fossil-fuel era?
The growing threats of nuclear war and environmental catastrophe make it hard to bet on the survival of our species.
Allowing polluters to trade carbon could keep poor Californians breathing unhealthy air.