• COVER: Has Obama Changed Politics, or Has It Changed Him? - In his new, more combative mode, the challenger has begun to dislodge the idea of Hillary Clinton's inevitability. But does going on offense put him on the defensive about changing politics as usual?
• HEALTH & MEDICINE: The Next Attention Deficit Disorder? - If you haven't heard of sensory processing disorder, or SPD, you're not alone. It's not in the medical books. So why are so many kids being treated for it?
• BUSINESS: Bracing for a Recession - Consumers drive the U.S. economy. But we're maxed out on our debt, and the good times may be coming to an end
• ARTS & ENTERTAINMENT: The Legend of Will Smith - How one man built a global movie-magnet machine
Scientific American, the oldest continuously published magazine in the U.S., has been bringing its readers unique insights about developments in science and technology for more than 150 years.
BusinessWeek is a business magazine published by McGraw-Hill. It was first published in 1929 (as The Business Week) under the direction of Malcolm Muir, who was serving as president of the McGraw-Hill Publishing company at the time. Its primary competitors in the national business magazine category are Fortune and Forbes, which are published bi-weekly.
• COVER:What Makes Us Moral - Morality and empathy are writ deep in our genes. Alas, so are savagery and bloodlust. Science is now learning what makes us both noble and terrible--and perhaps what can make us better
• HEALTH & MEDICINE: The Year in Medicine From A to Z - The new stem-cell breakthrough is the scientific bulletin of the year, but 2007 provided a whole alphabet of medical news, as TIME's A-to-Z guide shows
• SOCIETY: Facial Yoga - Laugh if you like, but these hot new workouts may actually help you look younger
• BUSINESS: Is Facebook Overrated? - The cool kid on the Web has everyone's attention, but the social-networking site still needs profits to match its promise
