Scientific American, April 2005 by Scientific American | Free Audiobook

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Title: Scientific American, April 2005
Author: Scientific American
Narrator: uncredited
Format: Highlights
Length: 1 hr and 26 mins
Language: English
Release date: 04-01-05
Publisher: Scientific American
Genres: Science & Technology, Magazine & Radio

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.
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in Michael Crichton's
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©2005 Scientific American

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