bacteria plate

The human body hosts hundreds of bacterial species that perform various salubrious housekeeping chores, from aiding digestion to helping the immune system identify foreign invaders. Every person—even an identical twin—has a unique distribution of bacteria on various body areas. Now some researchers are suggesting that these individual differences could lead to the development of new crime-solving tools.

Science: CSI’s Latest Clue—Bacteria

(via Schneier on Security)