Features in 2007

While the US and EU plan major investments in bioethanol and biodiesel, critics argue that biofuels carry too high a cost. Kurt Kleiner reports.

With climate change placing increasing pressure on environmental resources, it is now being viewed as a threat to national security. Amanda Leigh Haag reports.

Companies worldwide are now competing to cut their carbon emissions, but is this trend one of environmental concern, hard-headed business or careful PR? Kurt Kleiner investigates.

As discussions get underway over a global agreement to slash CO₂ emissions beyond 2012, Amanda Leigh Haag looks at how the Kyoto Protocol has fared and the issues that will shape its successor.