* Climate scientist James Hansen gives most dire warning yet

A leading climate scientist gave an alarming warning that limiting global warming to two degrees Celsius may not prevent a catastrophic sea level rise that would leave major coastal cities from Miami to Mumbai at risk of drowning.

“I think that the major implication of that will be that we hand young people a climate system where it’s not possible to avoid a large sea level rise,” said Hansen, who went on to slam the two-degree target agreed upon at the 2009 Copenhagen talks as being “pulled out of a hat.”