Copenhagen climate change talks must fail, says top scientistExclusive: World's leading climate change expert says summit talks so flawed that deal would be a disaster Suzanne Goldenberg, US environment correspondent guardian.co.uk, Wednesday 2 December 2009 20.54 GMT The scientist who convinced the world to take notice of the looming danger of global warming says it would be better for the planet and for future generations if next week's Copenhagen climate change summit ended in collapse. In an interview with the Guardian, James Hansen, the world's pre-eminent climate scientist, said any agreement likely to emerge from the negotiations would be so...