By Brian Kahn for Climate Central, part of the Guardian Environment Network

Study of past sea level changes shows coastal communities may face rises of at least six metres even if we limit global warming to 2C, reports Climate Central

Even if world manages to limit global warming to 2C — the target number for current climate negotiations — sea levels may still rise at least 6 meters (20 ft) above their current heights, radically reshaping the world’s coastline and affecting millions in the process.

That finding comes from a new paper published on Thursday in Science that shows how high sea levels rose the last time carbon dioxide levels were this high.

Via: http://www.theguardian.com/environment/2015/jul/10/scientists-predict-huge-sea-level-rise-even-if-we-limit-climate-change