A team of researchers at Dartmouth College created a breakthrough device that can immediately detect the presence of secondhand cigarette smoke, and even third-hand smoke. Secondhand smoke detector (© Eli Burakian) The device, described in a paper in the journal Nicotine and Tobacco Research, is smaller and lighter than a cellphone. It uses polymer films to collect and measure nicotine in the air; a sensor chip then records the data on an SD memory...
