Extreme weather: Bill McKibben ponders just how strange this year has been.
Junk food: George Monbiot concludes that a possible link between Alzheimer's and poor diet might be more than sensationalist media spin.
Heat: 2013 tipped to break more records. With a good chance of an El Niño forming in the coming months, combined with the ongoing warming trend from greenhouse gases, next year could be one for the record books. At least until the next El Niño...
Mangroves: Per hectare lost, mangrove destruction is three times worse for greenhouse gas emissions than deforestation.
NB The following articles are eighteen months out of date, but I neglected to post them earlier and they are interesting.
Malthusians beware: Blame the World Bank and IMF (amongst others) for famine in the Horn of Africa, but don't blame overpopulation.
Deep sea fishing: Is any deep-sea fishing sustainable? The short answer is "almost none". Deep-sea fisheries tend to regenerate very slowly, given the small amounts of energy entering the system. Many of the creatures down there are older than your grandmother.
Organic farming: It can be more profitable than conventional farming over the long term, even if organic premiums drop by 50%.
Climate panic: What we can all be doing about climate change. The Onion nearly always hits the key issue on the nose.