Peering down on future battlefields, U.S. military satellites may tell friends from foes by sensing residues of what friendly troops had for dinner. The spacecraft would detect on a soldier’s breath or skin biomolecules or even microorganisms deliberately mixed into the food to label U.S. troops.
Such identification from afar is just one of many fruits that the U.S.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.