[2013-08-14] Heat waves to become more frequent and severe + http://www.sciencedaily.com/releases/2013/08/130815084845.htm + http://www.iop.org/news/13/aug/page_60872.html + http://iopscience.iop.org/1748-9326/8/3/034018/ + http://www.eurekalert.org/pub_releases/2013-08/pifc-mii081213.php + http://www.pik-potsdam.de/news/press-releases/multifold-increase-in-heat-extremes-by-2040 with greenhouse_gas_emissionsheatwaves