Newspaper article The Canadian Press

National Audio 8:35 PM ET

Newspaper article The Canadian Press

National Audio 8:35 PM ET

Article excerpt

National Audio 8:35 PM ET

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NAT116 - (SCI-Weight-of-Life) WASHINGTON. x-13s. 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 finds that humans only add up to about one ten-thousandth of the life on Earth. Associated Press science writer Seth Borenstein (BOR'-ehn-styn) says the study published in Proceedings of the National Academy of Sciences shows that since civilization started, humans have helped cut the total weight of plants by half and wild mammals by 85 per cent. ("..off of species.") (SOURCE:The Associated Press)

TAG: The study also shows domesticated cattle and pigs now outweigh wild mammals 14 to 1. …

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