COVENTRY, ENGLAND - MARCH 19: Climatologist and NASA scientist Dr James Hansen poses next to a mock grave stone declaring 'Climate change-a matter of life or death' outside the ruins of Coventry Cathedral on March 19, 2009 in Coventry, England. The symobolic head stone is the first stage of a climate change campaign action day. Organisers Christian Aid, CAFOD and others will later take part in a New Orleans style funeral through the streets of Coventry. (Photo by Christopher Furlong/Getty Images)
