Approaching a global warming tipping point

EarthTalk: Climate Change Tipping Point: How Close Are We?

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: What is the best way to measure how close we are to the dreaded “point of no return” with climate change? In other words, when do we think we will have gone too far?  — David Johnston, via EarthTalk.org While we…

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Cryosat-2 measures 50 percent more loss of sea ice than models have predicted

ESA CryoSat-2 Data Reveals Arctic Summer Sea Ice Loss 50 Percent Greater than Expected

Preliminary results from CryoSat-2–the first satellite capable of very accurately measuring ice sheet volumes across the Arctic region– indicate summer sea ice is being lost at a rate 50% greater than previously estimated, raising the prospect of profound local and global changes in climate and environment.