Scientific American – April 2009
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Overview: Scientific American is a popular science magazine, published (first weekly and later monthly) since August 28, 1845, making it one of the oldest continuously published magazines in the United States. It brings articles about new and innovative research to the amateur and lay audience. Scientific American (informally abbreviated to "SciAm") had a monthly circulation of roughly 555,000 US and 90,000 international as of December 2005. It is not a peer-reviewed scientific journal, such as Nature; rather, it is a forum where scientific theories and discoveries are explained to a broader audience. In the past scientists interested in fields outside their own areas of expertise made up the magazine’s target audience. Now, however, the publication is aimed at educated general readers who are interested in scientific issues. The magazine American Scientist covers similar ground but at a level more suitable for the professional science audience, similar to the older style of Scientific American.
In the April 2009 Issue:
Dark Energy, Does it really exist? Or does Earth occupy a very unusual place in the universe?
Also in this issue:
• Color Vision: Our Eyes Reflect Primate Evolution
• Green Lasers: The Next Innovation in Chip-Based Beams
• Soldiers’ Stress: What Doctors Get Wrong about PTSD
• Virus Watch: Preventing the Next Pandemic
• Solving the Mystery of the Vanishing Bees
Download Instructions:
http://rapidshare.com/files/216948978/200904.rar
