Articles in 2009

Despite their political popularity, carbon tariffs will be next to impossible to implement effectively, and as such will do little to solve the climate problem.

For climate science, the year 2009 brought significant discoveries and startling controversies. Kurt Kleiner reports.

Controlling the climate with technology was once the stuff of science fiction. But with tests already underway, there's an urgent need for global governance of geoengineering. Mason Inman reports.

Policymakers must aim to avoid a 2 °C temperature rise, but plan to adapt to 4 °C.

Outspoken climate scientist James Hansen has just completed his first book, due for release in December. Interview by Keith Kloor.

Wetlands store vast amounts of carbon, but efforts to make them eligible for credits under a global climate treaty could prove tricky. Melanie Lenart reports.

Military and intelligence experts become increasingly focused on the “climate security” threat. Keith Kloor reports.

Climate policy should aim to limit the rate of warming, as well as setting a cap on total allowable emissions.