Knee deep, and still digging

GreenlandmeltsmallJames Hansen, perhaps the most outspoken of mainstream climate scientists, reckons that unless we take urgent steps to cut emissions we’ll be committing the world to multi-metre sea level rise this century. In this week’s New Scientist, he presents his reasons why:

In my opinion, if the world warms by 2 °C to 3 °C, [..] massive sea level rise is inevitable, and a substantial fraction of the rise would occur within a century. Business-as-usual global warming would almost surely send the planet beyond a tipping point, guaranteeing a disastrous degree of sea level rise.

That’s a controversial viewpoint, and has lead to Hansen being described as “alarmist

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