By Saturday, 2,385 people who took the poll said “count me out” compared to just 415 who said “count me in”, after being asked whether they agreed with the statement: “I’ve seen the evidence. And I want the government to prove they’re serious about climate change by negotiating a strong, effective, fair deal at Copenhagen.”

The website, which accompanies a major new exhibition at the venerable South Kensington museum, claims to offer "all the evidence you need to believe in climate