Grand Teton National Park in Wyoming has turned to an unusual conservation strategy to save one of its fastest-declining bird populations: robot birds. Park officials and wildlife experts have deployed lifelike robotic greater sage-grouse that mimic the species’ elaborate courtship dances, puff out their chests and broadcast recorded mating calls in an effort to attract…

In many parts of the eastern United States, getting rid of mosquitoes has become just another household service. Homeowners hire private companies to spray their yards, or they buy insecticides and foggers themselves, hoping to reclaim summer evenings from constant bites. But new research from North Carolina State University suggests those choices may be quietly…