Forget UFOs—turns out Uncle Sam is now worried about secret sunshine saboteurs! As countries experiment with “hacking” the climate using aerosols to dim the sun, the U.S. has turned to high-tech balloons to play sky detective. It’s a bit like CSI: Stratosphere Edition, but with fewer sunglasses and more existential dread about who’s controlling the thermostat.

United States Attempting to Detect Other Countries Tinkering With the Climate