The Evolution of House CatsGenetic and archaeological findings hint that wildcats became house cats earlier--and in a different place--than previously thought
Phosphorus Famine: The Threat to Our Food SupplyThis underappreciated resource--a key component of fertilizers--is still decades from running out. But we must act now to conserve it, or future agriculture could collapse
How Trivial DNA Changes Can Hurt HealthSmall changes to DNA that were once considered innocuous enough to be ignored are proving to be important in human diseases, evolution and biotechnology
Racetrack Memory: The Future Third Dimension of Data StorageA device that slides magnetic bits back and forth along nanowire "racetracks" could pack data in a three-dimensional microchip and may replace nearly all forms of conventional data storage
Unlikely Suns Reveal Improbable PlanetsAstronomers are finding planets where there were not supposed to be any
Scientific American 10Ten researchers, politicians, business executives and philanthropists who have recently demonstrated outstanding commitment to assuring that the benefits of new technologies and knowledge will accrue to humanity
50, 100 & 150 Years Ago
Space Food Zeppelin II Safe Passage
Updates: Whatever Happened to Fuel Cell Progress?
Are Midwestern Earthquake Faults Shutting Down?
Genetic Copy Variations and Disease
Is a Popular Carbon-Offset Method Just a Lot of Hot Air?
A Bead on Disease
Laser Beams That Curve
Learning Fat-Burning Secrets from Sled Dogs
Stretching Your Mouth Affects What You Hear
What Conficker Reveals about Internet Crime
Are Dog Breeds Actually Different Species?
From the Editor
On the Other Hand
A Flash of Fusion
Letters to the Editors
Naked Singularities Serious Games Beef Production
Reality Check for Stem Cells
Dinochicken Acts of God Nature's Masterpiece
Why People Believe Invisible Agents Control the World
Rethinking the Global Money Supply