Ex-sceptic says climate change is down to humans

BBC News Science and Environment 30 July 2012.

A formerly sceptical climate scientist says human activity is causing the Earth to warm, as a new study confirms earlier results on rising temperatures.

In a US newspaper opinion piece, Prof Richard Muller says: “Call me a converted sceptic.”

Muller leads the Berkeley Earth Project, which is using new methods and some new data to investigate the claims made by other climate researchers.

Their latest study confirms the warming trend seen by other groups.

The project received funds from sources that back organisations lobbying against action on climate change…