He was reading an article about how chemicals we're dumping are triggering a frog species natural ability to change sex. The frogs normally do it when there's t

He was reading an article about how chemicals we're dumping are triggering a frog species natural ability to change sex. The frogs normally do it when there's too many of one sex, to even it out, but the chemicals were making them switch when there was balance and were causing an imbalance. Truth is stranger than fiction: it would have been more accurate for him to say "they're turning the frogs trans".