Churchill, CanadaPolar bears, the world’s largest land carnivores, are spending more time ashore in search of food as climate change melts their prime hunting ground—sea ice. Increasingly, this results in bears entering Arctic communities, where they sometimes come face to face with residents. In February 2019, a  “mass invasion” on the Russian Arctic archipelago of Novaya Zemlya trapped people in their homes while several dozen bears wandered the town. In 2018, two separate attacks in the Canadian province of Nunavut resulted in the deaths of two men; in 2021 a bear attacked and injured three people in the same region before it was killed.

But an existing technology modified to spot the white, fluffy bears