Nanotech Breathalyzer Detects Telltale Signs of Lung Cancer

In a doctor's office in the near future, part of a smoker's routine checkup could involve blowing into a tube connected to a small sensor. The doctor will look at the sensor's display and know immediately whether she has to deliver the grim diagnosis: lung cancer. Researchers in Israel have invented a new "breathalyzer" that can detect chemical compounds produced by lung cancer cells.