text: Story number 1 is true. The new CPR guidelines were published in the journal, Circulation, which noted that research found no real advantage to mouth-to-mouth CPR in cases outside of a hospital, and since people may be uneasy about trying mouth-to-mouth, but willing to try hands-only chest compressions, they should as even that technique may double a victim's survival odds. An easy way to remember how often to compress the chest: about the same as the beat of, no kidding, the Bee Gees hit, Staying Alive.
  And story number 3 is true. Humans have terrific hearing. Other animals may be able to detect sounds too high or low pitched for us to hear, but our ability to discriminate between sounds as close as a quarter of a musical tone apart appears to be unmatched among mammals, with the possible exception of bats. The research appeared in the journal Nature.
  All of which means that story number 2, about married women having less housework because their husband's help is TOTALL....... Y BOGUS, because what is true is that married women have seven more hours of housework a week than single women. Men who are married do an hour less housework a week than single men. The data are from the Panel Study of Income Dynamics, which has been ongoing at the University of Michigan since 1968. The most surprising revelation was that single men apparently do at least an hour of housework a week.
  Well that's it for this edition of the weekly SciAm podcast. You can write to us at podcast@SciAm.com and check out www.SciAm.com for the latest science news and for additional info on Expelled, including reviews by John Rennie and our Skeptic columnist Michael Shermer, who also appears in the film. For Science Talk, the weekly podcast of Scientific American, I'm Steve Mirsky. Thanks for clicking on us.
  
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