Drones piloted by climate-change activists target Heathrow

Heathrow tried a detection system after drone sightings shut down Gatwick airport for several days before Christmas. “You only need to have a few more drones than you have counter-measures and the drones have won the battle,” says Mr Michel. Experts advocate harsher punishments for drone operators who intrude on sensitive sites such as airports, arguing that a catastrophic accident is a matter of “when, not if”.

Source: www.economist.com