lundi 4 août 2014

Tiny Ants Might Be Helping Cool Earth's Climate

Ants

Ants may be some of Earth's most powerful biological climate brokers, a provocative new study claims.


The average ant lives and dies in less than a year, but a long-term experiment tracking the insects' effects on soil suggests they cooled Earth's climate as their numbers grew.


"Ants are changing the environment," said lead study author Ronald Dorn, a geologist at Arizona State University in Tempe.


Dorn has discovered that certain ant species "weather" minerals in order to secrete calcium carbonate — better known as limestone. When ants make limestone, the process traps and removes a tiny bit of carbon dioxide gas from the atmosphere. Read more...


More about Atmosphere, Us World, World, Insects, and Climate



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