A chemical compound used to stimulate weight gain in cows may be contaminating aquatic ecosystems in the United States and disrupting the reproductive processes of fish, according to a new study in the journal NatureCommunications.This hormone seems to be changing sex of fish in U.S. rivers. Time. Justin Worland. http://www.msn.com/en-us/news/us/this-hormone-seems-to-be-changing-sex-of-fish-in-us-rivers/ar-BBjDJQg
