You’ve probably heard about the effect global warming appears to be having on polar bears. (As the world gets warmer, ice melts, reducing polar bear habitats.)

But now scientists say that global warming could be shrinking ants, beetles, cicadas and other bugs. Not shrinking the overall population of these bugs, but actually shrinking the bugs themselves.

A new study says that plants and animals are getting smaller over time because of warmer temperatures and lack of water.

Researchers at the University of Singapore studied fossil records and showed that many species have shrunk as temperatures have increased.

In times of drought, smaller animals may survive better than larger ones, the scientists found. This “can lead to smaller offspring, leading to smaller average size.”

Scientists say that over time, the smaller plants and animals could lead to food shortages that could effect the human population as well.