Volume 1 Issue 912, December 2009

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.

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

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

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

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