- 2009

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Scientific American Magazine 12/24/09
Readers Respond on the "Origin of Computing"
Letters to the editor from the September 2009 issue of Scientific American
Scientific American Magazine 12/15/09
Crack Research: Good news about knuckle cracking
One man's long, noisy, asymmetrical adventure gets him a high five
Scientific American Magazine 12/10/09
Extreme Monotremes: Why Do Egg-Laying Mammals Still Exist?
Ancestors of the duck-billed platypus and the echidna may have survived their live-birthing competitors by taking to the water
Scientific American Magazine 12/10/09
Tiny tyrannosaurs rewrite evolutionary rules
Dainty relatives of T. rex force a rethinking of the origins of this dinosaur

Scientific American Mind 12/30/09
I Learned It at the Movies--Hollywood as a Teacher
Even films that are historically inaccurate can be a valuable teaching tool

Scientific American Magazine 12/28/09
How Asteroids Built the Continents
Did asteroid strikes during the earth's youth spawn the earliest fragments of today's landmasses?

Scientific American Magazine 12/16/09
Looking for Life in the Multiverse
Universes with different physical laws might still be habitable

Scientific American Mind 12/1/09
Depression's Evolutionary Roots
Perhaps depression is not a malfunction but a mental adaptation that focuses the mind to better solve complex problems

Scientific American Magazine 11/30/09
Decoding an Ancient Computer: Greek Technology Tracked the Heavens
New explorations have revealed how the Antikythera mechanism modeled lunar motion and predicted eclipses, among other sophisticated tricks

Scientific American Magazine 11/25/09
Portrait of a Black Hole
By adapting a global network of telescopes, astronomers will soon get their first look ever at the dark silhouette of a black hole

Scientific American Magazine 11/12/09
Recommended: A Shadow Falls
Scientific American recommendations on nuclear proliferation and ancient alcohol

Scientific American Magazine 11/10/09
50 Years Ago: The Nutcracker Man
Innovation and discovery as chronicled in past issues of Scientific American

Scientific American Mind 11/9/09
The Color of Sin--Why the Good Guys Wear White
Ancient fears of filth and contagion may explain why we think of morality in black and white

Scientific American Magazine 11/2/09
The Long-Lost Siblings of the Sun
The sun was born in a family of stars. What became of them?

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Time to Ban Production of Nuclear Weapons MaterialA new global treaty that cuts off production of plutonium and highly enriched uranium for nuclear weapons could jump-start nuclear disarmament and help prevent proliferation