celardore writes "BBC News reports about the epic journeys taken by dragonflies searching for warmer climates have been revealed by scientists in the US. The team, led by researchers from Princeton University, found that the insects are capable of flying up to 85 miles (137 km) in a day. Each transmitter weighed about a third of a gram and had enough battery life to track an individual for 10 days; but tagging such small creatures is far from easy. "The challenge is first catching the dragonfly," said Professor Wilcove. Once caught, each transmitter was attached with a couple of drops of superglue and some eye-lash adhesive."