Bloodhounds, take notice! Thanks to researchers at Purdue University, law enforcement officers and forensic pathologists may soon have a new working tool to sniff out trouble–a device they can take to the scene for instant identification. Today’s mass spectrometers are much too large to take into the field, and analysis takes several hours. The portable mass spectrometer being developed fits in a backpack and analyzes unknown substances immediately. A big sniffer in a little package!