The World's Jason Margolis tells us about a group of architects that hopes to reduce greenhouse gases, by designing buildings that use no fossil fuels at all.

In Tehran, more and more Iranians are buying more and more cars... with predictable results -- congestion and smog. Correspondent Steve Zind reports that air pollution in the Iranian capital is causing health problems for citizens and headaches for city officials.

The World's environment editor Peter Thomson reports on the squabble over who should be responsible for greenhouse gas emissions linked to Chinese exports to the rest of the world.

The World's Mary Kay Magistad reports on China's efforts to reduce air pollution. Officials in the southern regions of Guandong say they're taking tough measure to cut back on emissions. But the air doesn't seem to be getting cleaner.

Correspondent Julia Kumari Drapkin reports from Panama on the debate over the conservation importance of tropical forest that are growing back after being cut.

Anchor Marco Werman speaks with The World's environment editor, Peter Thomson, about the latest science on climate change from a conference under way in Copenhagen.

Europe is poised to adopt some of the world's toughest controls on pesticides. But the makers and users of many pesticides warn the move could put the squeeze on Europe's food supply. The World's Gerry Hadden reports.

In the past year, Ontario has shed some 100,000 manufacturing jobs. The automotive sector bore the brunt of those job losses. Now some auto workers are turning green. The World's Jason Margolis has more.

Anchor Marco Werman speaks with Alain Hubert, project manager for the Princess Elizabeth Station on Antarctica. It's the first polar research base powered entirely by the wind and the sun.

Location of Princess Elizabeth Station (flag): Google Earth

The Bush administration resisted efforts for an international agreement to control mercury pollution. But the Obama administration has taken a different position. And that's made way for a new agreement among environmental officials around the world. The World's Environmental Editor Peter Thomson has the story.