Scientific American, April 2012 by Scientific American | Free Audiobook

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Title: Scientific American, April 2012
Author: Scientific American
Narrator: Mark Moran
Format: Highlights
Length: 1 hr and 24 mins
Language: English
Release date: 04-01-12
Publisher: Scientific American
Genres: Science & Technology, Magazine & Radio

Summary:
In this issue:
"First of Our Kind": Recently discovered fossils from South Africa could revise long-held ideas about how we came to be human.
"This is Your Brain in Meltdown": Neuroscientists explain why stress can make the mind turn to mush.
"Bound for the Moon": The next rover to roam the moons surface may come from college students and private companies working on a shoestring budget.
"Polios Last Act": A component of the most widely used polio vaccine now causes more disease than the virus it is supposed to fight.

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