Acid snails

Changing chemistry in the world's oceans could affect the ability of a snail to defend itself.

By Emily Sohn, 00:00 AM October 19, 2007

Conditions in the world's oceans are changing, thanks to human activities. And those changes might be affecting the ability of a small snail to defend itself, suggests a new study.


Factories, cars, and other machines spit out lots of a gas called carbon dioxide. Carbon dioxide (CO2) is known as a greenhouse gas because it traps heat in the atmosphere. More and more of the gas has been accumulating in the air in recent years.


CO2 has also been dissolving in seawater, and that's been changing t...

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