In acidic oceans, sound carries further

Darkfrog submitted, created time 2 months 14 hours (sciencenow.sciencemag.org)

It seems that as the oceans grow more acidic with all this atmospheric CO2, sounds begin to travel longer distances before they dissipate. Despite what one might think, this is not good news for whales and dolphins, which use sound to communicate and travel. Military sonar can already disrupt cetacean behavior as much as five hundred kilometers away. If things continue at the current rate, then by 2050, these sounds will travel 70% further in some parts of the Atlantic.

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Yangtze Dolphin Not Gone Yet!

Darkfrog submitted, created time 1 year 3 months (www.nytimes.com)

A large white mammal, possibly one of the China's rare baiji dolphins, proclaimed extinct just weeks ago, was sighted in the Yangtze River and videotaped. Heartening though this is, the article leaves out one important idea:

Scientists have said, even while they were searching for surviving dolphins, that even if a few individuals remained, they would not be enough to preserve the species.

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