Scientists who study wild animals want to get as close as possible to their subjects without stressing them out or disrupting their natural behaviors. One possible solution: remote-controlled rovers.
In a new study, Yvon Le Maho of the University of Strasbourg in France and colleagues equipped 34 king penguins with an external heart rate monitor that could be read with an RFID antenna (the same technology lets you into your office or onto the subway with the swipe of a card). A day later, they s...
Also read: Instant Heart Rate+ HR Monitor