United Press International: British researchers are establishing a public monitoring system to record sightings of 27 native grasshoppers and crickets. The system, which has been used successfully to record the spread of invasive harlequin ladybirds, will help researchers determine how climate change is affecting grasshoppers, The Times of London said Monday. Researchers said global warming is allowing crickets and grasshoppers to expand their habitats. “These insects are the foremost indicators of …