![](https://i.kinja-img.com/image/upload/c_fit,q_80,w_636/464b6201334183f2a9f840e6ac539a31.jpg)
New research this week suggests that humanity’s war against insectkind has had some unintended consequences: declining sperm counts. The study, a review of the existing data, found a clear association between increased exposure to insecticides and lower sperm concentrations in adult men. The authors say that the…