How daredevil drones find nearly extinct plants hiding in cliffs

Ben Nyberg stood on a knife-edge ridge along Hawaii’s Na Pali Coast, his eyes scouring the leafy recesses of the neighboring red-rock ridges. It was quiet, if not for a faint buzzing of a drone flying among flocks of curious white-tailed tropicbirds.
Read more: https://www.reuters.com/business/environment/how-daredevil-drones-find-nearly-extinct-plants-hiding-cliffs-2022-12-10/?source=Snapzu