David Kirsh wrote:

> The Sunday Times of London has an article about the increasing acidity
> of the oceans due to carbon dioxide emissions. Some researchers are
> warning that many invertebrate species, "including coral, crabs,
> oysters and mussels, may become unable to build and repair their shells
> and will die out."
>
> Ken Caldeira of the Carnegie Institution projects that, "[i]n less than
> 100 years, the pH (measure of alkalinity) of the oceans could drop by
> as much as half a unit from its natural 8.2 to about 7.7."


But if Darwin was right, we'll soon ahve a lot of new species to
collect.

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