September 30, 2009 Report In the latest installment in his series on innovation during the recession, Tom Bearden examines how one architect is turning unlikely items into environmentally friendly homes he calls "earthships."
June 30, 2009 Report Eight stories above midtown Manhattan, a new billboard has begun counting how much, and how fast, greenhouse gases are entering the atmosphere. Heidi Cullen of Climate Central Reports on the emissions countdown clock.
September 22, 2009 Report The Obama administration wants to spend $209 billion on renewable energy projects, such as solar and wind power. But there's an obstacle to renewable energy: Where to store it?