Rats driving cars, music and learning, cows and friendships, and very loud birds.
Painting cows to look like zebras, Planet Nine could be a black hole and prehistoric humans used bones like soup cans!
The Ig Nobel Prizes honour achievements that first make us laugh, then make us think. We take a look at this year’s winners: from dung beetles to penis amputations!
Hypoallergenic cows, a cure for pimples, baby DNA on the brain and lots more!