Alonso and his team captured and measured 41 males in central Spain and then tracked them over four years using radio tags fitted to the birds» backs. (newscientist.com)
The U.S. government is pushing aggressively ahead with plans for radio tags in passports, which will store personal information and be readable remotely by anyone, whether a customs official at a desk or a terrorist standing nearby. (scientificamerican.com)
Smart radio tags attached to rhinos allowed the drones to home in on each herd's current location, says Pierre du Preez, MET's chief conservation scientist. (newscientist.com)