TechnologySolar-powered ambush drones can wait for targets like land mines Russian ambush drones have been seen in Ukraine fitted with cheap solar panels, which enable them to lurk indefinitely, waiting for a target to come near News
EnvironmentWe are undergoing unprecedented loss of freshwater across the planet Rising temperatures are causing water to evaporate and driving humans to extract more groundwater, which is moving freshwater from the land to the seas and creating a "continental drying" trend News