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See Inside July 2007

News Scan Briefs

Beer Head with Numbers
Fifty-five years ago the late über-genius John von Neumann proved that the area of any two-dimensional region subject to surface tension—such as a bubble—changes in proportion to the number of its sides...

Seed Power
“Muscles” powered by changing humidity apparently help wild wheat seeds reach good places to sprout...

Twenty Percent Recall
It is a myth that people use only 10 percent of their brain, but it may be true that we use 20 percent to form memories...

Fibonacci Fandango
The Fibonacci sequence—in which each successive number is the sum of the previous two (1, 1, 2, 3, 5, ...)—appears all over the biological realm, describing, for example, how seeds spiral on strawberries and nautilus shells curve...

Stem Cell Blood Repair
After spending years devising the right chemical cocktail, researchers from Advanced Cell Technology in Worcester, Mass., have reported growing large numbers of human embryonic stem cells called hemangioblasts...

But It's Not Krypton, Is It?
The most Earth-like extrasolar planet yet discovered, just five times as massive as Earth, circles a red dwarf star called Gliese 581 20.5 light-years away...

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