Lily Guiney/Great Lakes Echo

Bison are on the upswing again as ranchers and government officials aim to increase their populations across the United States. And that could have implications for other livestock operations.

For the past 10 years or so, entomologists have been looking for a way to control the population of spotted wing drosophila, a fruit fly that feeds on healthy cherries and blueberries. They say they may have found their answer in releasing the samba wasp, which kills fruit flies by laying its eggs inside them.