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A Test for ConsciousnessHow will we know when we've built a sentient computer? By making it solve a simple puzzle
The Smartest Bacteria on EarthOne species of soil microbe makes unusually wise communal decisions
A Nobel CelebrationAs Nobel Prize winners gather this month to share their wisdom with younger researchers, Scientific American recalls some of the articles that Nobel laureates have published in our pages
I Stick to the ScienceWhy Richard A. Muller wouldn't tell House climate skeptics what they wanted to hear
Will Future Nuclear Power Reactors Be Safer?The surprising accident at Fukushima puts the spotlight on a new generation of U.S. nuclear reactors. Are they safe enough?
Greater Glory: Why Scott Let Amundsen Win the Race to the South PoleIn the race to the South Pole, explorer Robert F. Scott refused to sacrifice his ambitious science agenda
The Tasmanian Devil's Cancer: Could Contagious Tumors Affect Humans?A contagious tumor threatens to wipe out the famous Tasmanian devil. Could similarly "catching" cancers arise in humans, too?
Living in a Quantum WorldQuantum mechanics is not just about teeny particles. It applies to things of all sizes: birds, plants, maybe even people
When Will Scientists Grow Meat in a Petri Dish?A handful of scientists aim to satisfy the world's growing appetite for steak without wrecking the planet. The first step: grab a petri dish
Spies Inside: Ultrasmall Electrodes Go Anywhere
Off the Tree, Ready to Eat
Will the Internet Stop on June 8?
A Batter for a Batter: Heat Raises Odds of Being Hit by Pitch
The Smallest Hitchhikers
A Mystery Wrapped in a Crystal
What Is It? Fraying Matter
Treating Tourette's: Histamine Gene May Be Behind Some Tic Disorders
Hack My Ride: Cyber Attack Risk on Car Computers
Join the F***ing Club: Why Swearwords Have Taken over Billboard's Top 10 Chart
No X-aggeration: How Companies Can Gather Information and Still Preserve Privacy
How Brains Bounce Back from Physical Damage
An Epidemic of False Claims
From the Editor
Climate Change Increases Threat of Fire to U.S. West
Letters to the Editors
Readers Respond to "How to Fix the Obesity Crisis" and Other Articles
Recommended: Among Giants: A Life with Whales
Critical Mass: How to Maintain the Power of Online Reviews
The Science of Health
Shades of Grief: When Does Mourning Become a Mental Illness?
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