Purdue scientists created a vaccine targeting sperm protein IZUMO1 to reduce fertility in animals. Mouse tests showed pregnancies and litter sizes dropped by about two‑thirds. Contraceptive vaccines ...

Add Yahoo as a preferred source to see more of our stories on Google. HENDERSONVILLE, Tenn. (WKRN) — Hendersonville is working to tackle its growing deer dilemma. The weekend, the city is partnering ...

The definition of overpopulation is in the name: An area that’s beyond capacity to handle the material needs of the people living in it. Less than 1 billion people walked this planet in the mid-18th ...

Scientists have reported it for decades: overpopulation can impair reproduction. Crowded chickens lay fewer eggs. Crowded mice have smaller broods. In humans, several studies have associated increased ...

In a recent op-ed by Michael Geruso and Dean Spears in The New York Times and picked up by The Salt Lake Tribune, “Don’t expect depopulation to solve our problems,” the authors contend that ...

Sunday's editorial, "Time's up for climate change deniers," left out something very important: overpopulation. As Walt Kelly's cartoon character Pogo said, "We have met the enemy, and he is us." ...

The world's population stands at nearly 7 billion. The first time the world hit 1 billion was 200 years ago; these figures show a dramatic rise in population. There is projected to be up to 3 billion ...

News footage these days sometimes shows wild horses crowding dry rangelands in the American West or deer wandering through suburban streets, highlighting the growing problem of wildlife overpopulation ...