by Mike Collier Agence France-Presse Cēsis, Latvia (AFP) — Skirted on all sides by snow-clad pine forests, Latvia’s remote Lake Ninieris would be the perfect picture of winter tranquility — were it not for the huge drone buzzing like a swarm of angry bees as it zooms above the solid ice surface. The powerful three-metre-long (nine-foot) drone, sporting 16 spinning propellers, is fitted with long tow ropes with handles, the kind used in water-skiing. Two snowboarders […]