Is your birth control making male fish sprout ovaries?

Ecologists keep tabs on sturgeon, a prehistoric fish that likes the Missouri River’s muddy waters. The pallid sturgeon and the lake sturgeon are endangered, and the more common shovelnose sturgeon has become “a species of concern.”

In addition to habitat loss and overfishing, sturgeon face another possible challenge: The pill. The prevalence of sturgeon with male and female sex organs has researchers wondering if the fish are drowning in birth control and other drugs that toilets empty into rivers and streams.