The president heartened environmentalists with the strongest presidential statement on warming in history. All that's left to see is how he follows through.
We spend the equivalent of a week at work stuck in traffic every year
Can Pepsi be an innovative force for good in a world of corporate bean-counters and hard-nosed investors? We're finding out.
By 2050, the world will contain 10 billion people, the UN now predicts, but we shouldn't see the statistic through the failed lens of population control
Obama's clean energy plans rely on a tenuous truce between nuclear power advocates and environmentalists. Could nuclear meltdown reverse these gains?
Whether you're considering joining the Twitter bandwagon or already have handle, here are the basics behind the most comprehensive pulse of information today
Del Monte is marketing plastic-wrapped bananas—to the horror of environmentalists. But what is the right reaction?
This Friday is the beginning of the national day of unplugging, a 24-hour period during which people voluntary shut off gadgets. What's one thing you'll do to unplug?
The 2008 oil price spike was quickly forgotten in the haze of recession, but Libya's revolution could put innovation back on track
With the global population set to hit 7 billion in 2011, people are taking personal steps and coordinating local action rather than relying on national and global leaders
With reports of the automobile catching fire, customers lose faith in the cheap product
New research shows that polar bears are poorly adapted for the new habitat they will occupy as climate change pushes them southward looking for food
Representative John Shimkus believes we shouldn't worry about climate change because God promised Noah that there wouldn't be another earth-destroying flood
The new documentary questions environmentalists' stance on nuclear energy and a cleaner future. Does it get it right?
It will create much needed revenue for a cash-strapped treasury. Will a deficit-reducing carbon tax be more palatable to the public than a complicated cap and trade scheme in the U.S.?
How energy companies can spend millions trying in vain to make themselves look 'green'
The White House is going solar: mere distraction or powerful symbol?
With the clean-technology race intensifying, collaborating with China in developing a Sino-American clean energy alignment provides the best chance to create jobs in both countries
Adam Werbach was head of the Sierra Club at 23. Here, one prodigy defends another.