7 Jul 2014 7 Jul 2014 The new test detects tiny concentrations of the vapours given off by explosives, more than current swab tests can achieve.iStock NewsTechnology New device sniffs out terrorists' bombs Physical searches may become a thing of the past. by James Urquhart News Society How to make national parks more efficient at saving animals by Dyani Lewis Current reserves protect only 11% of endangered species. News Life Sciences Is the Yeti really the polar bear's cousin? by Daniel Cossins There is no DNA evidence of Yetis, Bigfoot, Sasquatch or the Abominable Snowman. Gallery Life Sciences Microbe masterpieces: A painter goes where the microscope cannot by James Mitchell Crow Cellular landscapes of the mechanics of infection. Opinion Life Sciences The year polio won by Laurie Zoloth Everyone must take responsibility for the epidemic of scientific mistrust. News The Future Editor's choice: Mosquito tricks, fashion chimps, urination law and stem cells by COSMOS editors A round-up from the scientific and technical journals.