Why global food production needs to be fixed, and how to do it (The Telegraph). An excellent presentation, full of information, easy to read, great graphics. (Also, check out the Global Health Security link at the end.)
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The current and projected impact of climate change on cities in the US (The Guardian). “In urban areas, heatwaves are exacerbated by vehicles, industrial processes and the presence of heat-retaining concrete and asphalt. And it is in cities – especially in low-lying poorer areas – where record rainfall often accumulates.” All that extra heat makes a big difference.
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How climate change serves as a threat multiplier (Mad Scientist Laboratory). This post by an Australian Army officer is a clear representation of the impact of climate change from a military point of view. “While climate change doesn’t automatically lead to higher levels of violence, the Global Peace Index described it best as its ability to exacerbate security threats when they stated that “climate pressures adversely impact resource availability, affect population dynamics, and strain societal institutions, which directly affects security and stability.” He provides a number of examples.
A story about climate tipping points that has not gotten the attention it deserves (PNAS journal). Yesterday’s letter contained several stories about what the current warming trend can lead to as temperatures rise. One story was focused on the many “tipping point” feedbacks in line for ignition on the path toward 2C, hastening its arrival. I want to add one more story that was published and posted here in June of last year, written by a leading group of scientists who concentrate on long term changes that take more time to emerge and may then be irreversible. The type of risk they foresee is clearly explained, and they say the potential threshold for realization could be reached with temperature gains as low as 2C above pre-industrial. “We suggest 2 °C because of the risk that a 2 °C warming could activate important tipping elements, raising the temperature further to activate other tipping elements in a domino-like cascade that could take the Earth System to even higher temperatures.” That terrifying exposure, uncertain as it may be, should be taken into consideration by all IPCC reports.
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A fascinating new way to get more value from oil-bearing sediments, while helping the planet (EurekAlert). A process has been developed that will liberate hydrogen in place of oil from any kind of oil field, leaving all the carbon in the ground. The original aim was intended for application to Canadian oil sands, which are very dirty and expensive to produce, but the economics look so favorable that much broader application is being considered. “When working at production level, we anticipate we will be able to use the existing infrastructure and distribution chains to produce H2 for between 10 and 50 cents per kilo. This means it potentially costs a fraction of gasoline for equivalent output. This compares with current H2 production costs of around $2/kilo. Around 5% of the H2 produced then powers the oxygen production plant, so the system more than pays for itself….. we anticipate that most of the interest in this process will come from outside Canada, as the economics and the environmental implications make people look very hard at whether they want to continue conventional oil production.” ( Is this for real?)
Carl