2 ants on a rock. Photo by Wolfgang Hasselmann on Unsplash.A new study estimates that there are 20 quadrillion ants on our planet. That’s 20,000,000,000,000,000 for anyone unfamiliar with quadrillions. Or roughly 2.5 million ants per living human.

By weight they outweigh all wild birds and mammals, and are about 20% of human biomass.