Guardian: IEA warns of 6ºC rise. It is hard to get a handle on just how catastrophic 6ºC would be. Let's just say that if we get to 6ºC, I don't think we'll be doing cost-benefit analyses anymore. David Roberts reflects on whether 6ºC is alarmist or realistic and points out that science alone can't tell us how bad climate change will be - because the most important unknown is just how we are all going to act and react over the next couple of decades. Those who think that 6ºC by 2100 is entirely unrealistic implicitly assume either (a) massive global co-ordinated action to mitigate through aggressive emissions reductions across the board or (b) global and long term economic collapse arriving sooner rather than later.
Mongabay: Organic agriculture has lower yields than industrial farming, according to a new study in Nature, especially for grains, though that is not the whole story, since there are various downstream costs of industrial agriculture that reduce yields elsewhere (and elsewhen).
ScienceDaily: Plastic in ocean underestimated by at least a factor of 2.5 due to the effects of wind pushing pollution beneath the surface, rendering measurements and calculations based on skimming the surface inaccurate.
SMH: India's border fence. Not with Pakistan or China, but the 4,000 km militarised fence on the border with Bangladesh, in the face of a rising tide of people fleeing, amongst other things, a rising tide. Though speaking of that rising tide...
ABC: Australasia at hottest for (at least) 1,000 years (also in the Guardian and the original study is here). This is a significant finding since most temperature reconstructions have focused on the northern hemisphere, where a greater number of proxy records mean more data is available.
Science: Some good news from Greenland. A review of ten years of satellite data appears to indicate that we are not on track for the "worst case" (i.e. 2 metre) sea level rise by 2100. Of course, "good" is relative; even a rise of a few feet will lead to massive headaches, but multi-metre rises probably mean infrastructure vulnerabilities worth trillions. Sea level rise is one of the most serious long term effects of climate change, though I suspect that over the next few decades it is not going to dominate in comparison with, for example, concerns over food security.
Grist: What would it look like for media to take climate seriously? A very interesting conversation between two journalists about media coverage of the climate threat.