Scientists Are Using Drones to Combat a Fungus Wiping Out Hawaii’s Sacred Trees

A fleet of drones with built-in saws could be the future of forestry

Photography: UH Hilo SDAV Laboratory

InIn early September, a drone flew over the Waiakea Forest Reserve on Hawaii’s Big Island. It slowed its pace, lowered itself to a hover just feet from the canopy, and readied a device attached to its undercarriage. Two…