For all its complexity, the core of this problem can be stated simply enough: What kind of a climate transition would be fair enough to actually work?
Paolo Lugari, the founder of Las Gaviotas in Colombia, describes how the incredible energy of the human spirit has made Las Gaviotas into a world-famous example of sustainable living in a harsh environment.
Video: Author Dianne Dumanoski explains why climate change is ultimately not a crisis for the earth, but a crisis for humans, and why we must find our way "through this thicket of uncertainty."
Copenhagen may have been an official failure, but for a new generation of climate activists, it was transformative.
The clock has moved one minute away from midnight—the longstanding symbol for the end of civilization—signaling the possibility that "we are poised to bend the arc of history toward a world free of nuclear weapons."
Jonathan Schell, a leader of the anti-nuclear movement, offers motivation and tactical advice to the new generation of climate activists.
California residents stand to gain a lot from the state's efforts to cap greenhouse gases: less pollution, greener infrastructure, and a yearly check in the mailbox.
Sustainable, small-scale working forests are feeling the economic pinch. But nonprofit groups are helping family- and community-owned woodlands thrive by connecting them with carbon markets.
An EPA rule requiring large polluters to report greenhouse gases went into effect December 29, 2009.