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Summary

Scientists who have long wondered why the polarity of the Earth's magnetic field occasionally reverses may finally have their answer. Also, a look at how the online industry is stepping up its measures to thwart electronic junk mail, a new way of approaching long-term problems that focuses on flexibility rather than cost-benefit analysis; and surprising similarities between humans and animals when it comes to dealing with personal economics.
Learn more about global warming in Michael Crichton's State of Fear (Unabridged).
Want more Scientific American? You can listen to previous issues by clicking on archives under periodicals.
©2005 Scientific American

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  • Overall
    2 out of 5 stars
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  • Anne
  • 09-07-05

Love the content, do not like the narrator

Because I have always been a fan of the print mag, I thought listening to the news would be equally enjoyable, but the narrator's monotonal style is irritating and his variations in volume are distracting. I would like to know the name of the narrator so I can avoid him, but I see no listing of narrators for these mags! (why is that?)

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  • Mary
  • 27-04-05

Great!

A wonderful mag.