After the UN climate change conference, Stephen Sackur asks 5 world leaders what has be...
AC Grayling on brain science and human nature with neurophilosopher Patricia Churchland.
Cameron's Avatar; Film tips for activists; Andy Hopper on climate change
5/5 How architects are using aiming to create zero-carbon buildings, and whole cities.
Lawrence Krauss discusses the Origins of the Universe with philosopher AC Grayling.
Mike arrives at the Copenhagen summit to meet delegates, laugh with Santa and alien spot.
Will our love affair with the motor car have to stop to combat climate change?
Denmark's Green Lighthouse; Vint Cerf's smart home; Smart meters; Malta's smart grid.
1/5 Can population growth be managed if consumption and emission levels are reduced?
3/5 Hita Unnikrishnan on why climate change has to be addressed at the individual level.