7 far-out geoengineering ideas that could save the planet -- or destroy it trying.
The United Nations is vowing to end extreme poverty within our lifetimes. Here's why that might actually be realistic.
As the Arctic becomes an arena for conflict, the United States’ forgotten naval force will need to cowboy up.
How an ex-British prime minister’s sister-in-law, a headhunter’s grandson, dodgy PR firms, and a Malaysian kingpin are colliding in a fight over the future of democracy.
At a new center in Cambridge, a philosopher, an astronomer, and a software pioneer are looking for ways to save humanity from itself.
It's not just Obama -- the entire world is ready to get serious about climate change.
Five unlikely but extremely destabilizing global crises that Obama must prepare for now.
What the pundits and analysts don't tell you.
Is the United States really the impediment to a universal compact on global warming?
Why isn’t the Golden State at the climate talks in Doha?
Why corruption is set to become one of the defining political issues of the 21st century.
The world has spent two decades developing policies to combat global warming -- and we have little to show for it.
We've heard plenty about what the candidates want to do in office, but the future will be determined by what Tuesday's winner doesn't do.
From the failed Mongol invasion of Japan to Cyclone Nargis, six storms that changed the course of history.
When the economy is suffering, no one wants to hear about an impending environmental catastrophe.
Bjorn Lomborg missed the mark in his attacks on a new report about the costs of climate change.
The new climate-change study getting all the headlines is deliberately misleading. Too bad so many in the media got fooled.
What does the U.S. oil and gas boom mean for international energy markets and climate change initiatives? We asked top experts, and here's what they told us.
Yes, oil and gas made in the USA is surging. But does that really liberate us from the Middle East?
An ex-president is convicted, England celebrates, and Angela Merkel feeds a penguin.
Forget Kyoto. There’s a much better way to persuade the developing world to fight climate change.
A tragedy in Toulouse, spring has sprung, and a general testifies.