The US public is at a tipping point (to use that favourite journalese cliche) in its attitude to climate change. That's according to Prof John Holdren at Harvard University, who is chairman of the American Association for the Advancement of Science and a passionate advocate for more robust action to curb greenhouse gas emissions.
Here's my interview with him at the AAAS annual meeting in Boston, in which he reveals why he believes the US public has been slow to wake up to the dangers of climate change, and why he thinks attitudes could now change rapidly.
