Why did it literally take centuries for scientists to identify locusts and grasshoppers as the same creatures? Maybe it has something to do with our own sense of self. NPR hide caption toggle caption NPR Shots - Health News What An Insect Can Teach Us About Adapting To Stress February 22, 2019 Under pressure, a lot of us get rigid about our sense of self. But psychologists say it's healthier to be flexible and adapt to your circumstances. Just ask a grasshopper.