www.nature.comLaser-guided lightning - Nature PhotonicsA terawatt laser filament is shown to be able to guide lightning over a distance of 50 m in field trials on the Säntis mountain in the Swiss Alps.There is a mountain of 2.5 km height in Switzerland. It has a tower of 123m height. They shot a laser from its top into the sky to guide lightning. The airspace got prohibited for the time when the experiment took place.