Riots in Algeria over unemployment and high food prices, photo: Magharebia/CC BY

There’s no doubt that rising food prices in a specific can lead to rioting. We have plenty of current and historic examples of that. But some interesting new research highlighted in Technology Review shows that once average global food prices cr…Read the full story on TreeHugger

There’s no doubt that Arctic sea ice is melting at record rates, with rising temperatures in the region outpacing the global average increase, but a new article in Science questions whether there will ever be a tipping point in Arctic ice melting….Read the full story on TreeHugger

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photo: James Seith Photography via flickr

Back in 2004 there were only about 936 polar bears in the Western Hudson Bay part of Manitoba. Now researchers say that the increasing length of the ice-free season in the region means that a tipping point will soon be reached, which means the polar bears will decline over the next 30 years to a point where too few remain to sustain a viable breeding population. …Read the full story on TreeHugger

Image via Inhabitat

Here’s a nice, quick video that sums up the myriad environmental woes that humans have perpetrated (and are perpetrating) on our poor ol’ planet. The vid presents the question of whether we’ve passed a tipping point: whether the earth is salvageable from our many environmental malpractices, including excessive carbon pollution, forest degradation, ocean acidification and the like. In other words, it’s a cheery way to start your week….Read the full story on TreeHugger

photo: Alexander Torrenegra via flickr.

Amazongate was a non-story from the outset, a question of sloppy citations rather than sloppy science. In fact a new piece in Tierraamérica which Mongabay is highlighting validates the original IPCC projection about how much of the Amazon rainforest could …Read the full story on TreeHugger

portion of cover of Peak Everything by Richard Heinberg

We have used the peak word to describe a lot of things, in fact eight of them in a roundup and more recently, Peak Sand. David Adam at the Guardian mixes his memes and asks Has peak theory reached its tipping point? which is…Read the full story on TreeHugger