(11 May) Re-thinking climate change. I am one of 14 authors of The Hartwell Paper, published today (and here in Chinese), which outlines a new direction for climate policy following the crash of 2009. See my editorial in the BBC Green Room, Richard Black’s commentary on it, and also The Economist. I have published a separate essay on the same theme in the USA-based Environment magazine. The BBC Radio 4 programme Costing the Earth covered the story in its 12 May broadcast.