Why diving marine mammals resist brain damage from low oxygen

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UCSC researchers found that some animals including bottlenose dolphins may be able to endure low oxygen levels due to enhanced amounts of proteins called globins in their brains. Here researcher Beau Richter monitors the breath-holding cabability of ...
UCSC researchers found that some animals, including bottlenose dolphins, may be able to endure low oxygen levels due to enhanced amounts of proteins called globins in their brains. Here, researcher Beau Richter monitors the breath-holding cabability of Puka, a bottlenose dolphin at Long Marine Laboratory. Photo by T. M. Williams

No human can survive longer than a few minutes underwater, and even a well-trained Olympic swimmer needs frequent gulps of air. Our brains need a constant supply of oxygen, particularly during exercise.


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All News summaries for December 19, 2007

Study explores plausibility of bulbs and tubers in the diet of early human ancestors

10 hours ago | User rating: not rated yet
(PhysOrg.com) -- It was a dirty job, but somebody had to do it. Anthropologist Nathaniel J. Dominy of the University of California, Santa Cruz, has advanced the investigation of the diet of early human ancestors ...

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Rural strategies designed to induce economic growth often emphasize the need to improve access to capital for poor households. However, this approach implicitly assumes that family members pool all their resources and allocate ...

Colonial heritage metaphors used in US military conflicts

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The historical reference to "Indian Country" presents a complex metaphor. For many Native Americans it signifies home, family, and territory; however, for others the term can refer to colonialism and Native American land ...
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