Scientific American, April 2009 Audiobook by Scientific American

Don’t miss the opportunity to listen to the full audiobook Scientific American, April 2009, free at our library.

In this issue: “Does Dark Energy Really Exist?”: Dark energy’s existence could have another explanation that our galaxy lies at the center of a giant cosmic void. “Saving the Honeybee”: A disease called “colony collapse” is killing millions of bees and could affect the future of our food supply. “The Post-Traumatic Stress Trap”: A growing number of experts believe that the concept of post-traumatic stress disorder is severely flawed and that soldiers are suffering as a result. “Preventing the Next Pandemic”: An international network for monitoring virus transmission from animals to humans might help scientists head off global epidemics.

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