FILE - In this April 11, 2018, file photo, two boys push their scooters through a park with green blossoming trees in Frankfurt, Germany. When you weigh all life on Earth, billions of humans don’t amount to much compared to trees, earthworms or even viruses, according to a study in the Monday, May 21, 2018, Proceedings of the National Academy of Sciences. (AP Photo/Michael Probst, File)

Humans account for very little next to plants, worms, bugs

May 21, 2018 - 3:10 pm

WASHINGTON (AP) — Scientists calculate that when you weigh all life on Earth, billions of humans don't amount to much compared to trees, earthworms or even viruses. But they say we really know how to throw around what little weight we have.

A first-of-its-kind global biomass census found that humans only add up to about one ten-thousandth of the life on Earth. The planet's real heavyweights are plants. They outweigh people by about 7,500 to 1, and make up more than 80 percent of the world's biomass, the study said.

Since civilization started, humans helped cut the total weight of plants by half and wild mammals by 85 percent. Now domesticated cattle and pigs outweigh wild mammals 14 to 1.

The study is published in Monday's Proceedings of the National Academy of Sciences.

AP Editorial Categories: 
Comments ()