• SCIENCE: What Makes Teens Tick- A flood of hormones, sure. But also a host of structural changes in the brain. Can those explain the behaviors that make adolescence so exciting--and so exasperating? • BUSINESS: Is Microsoft A Slowpoke? - Its big new product is way overdue. And Linux is challenging Windows' desktop dominance. What will it take to get the software titan moving again? • ARTS & ENTERTAINMENT: Troy Story - How did an Iliad adaptation turn into an endless moviemaking odyssey? Blame hurricanes, turtles, Bulgarian weight lifters ...