Table of Contents

COVER

Love, Sex & Health

Sex arouses fascination and controversy, but it also plays a key role in mental and physical health. In a special issue, TIME explores where science and Cupid meet

BIOLOGY

MATING: Procreation is only one reason we are hardwired for sex 62

SCIENCE OF LUST: How a host of biochemicals fuel the sex drive 68

AND IT'S GOOD FOR YOU TOO: A healthy sex life may lead to a healthier life overall 76

MIND GAMES: Love feels like it stems from the heart, but what's going on in the brain? 80

BEHAVIOR

ANIMAL URGES: Nonhuman sex is performed in unexpected ways 84

TALKING IT OUT: Is a new approach to couples therapy more successful than the old? 88

THE X FACTOR: Pornography can titillate, but can it also tear a relationship apart? 99

THEY SAID IT: Through the ages, the well known and wise have weighed in on human sexuality 102

S&M: Embracing power games, from role playing to real pain 104

NEVER TOO OLD: Sex may change, but it needn't cease after 60 110

MARITAL HELP: We explore the many ways to heat up your sex life 117

A TO Z: An alphabet's worth of health news from 2003 120

10 QUESTIONS 8 LETTERS 9 NOTEBOOK 17 MILESTONES 22 IN THE ARENA 23

NATION

IOWA: Handicapping the caucus, and understanding how it works 24

Why Wes Clark is on the rise 32

DEBRIEFING: In a new book, former Treasury Secretary Paul O'Neill dishes on the Bushies 34

SAFETY IN THE SKY: Other countries balk at U.S. demands for air marshals on planes 38

WORLD

WRATH OF KHAN: Did a Pakistani scientist sell atomic secrets? 40

CONTROLLING SARS: The disease has re-emerged in Asia, but a virologist may help avert disaster 44

BUSINESS

CRUISING FOR CASH: Launching the $800 million Queen Mary 2 48

SCIENCE

SPACE: The Mars rover scopes out the Red Planet 52

SOCIETY

BACK ON THE BEAT: After Boston and New York, police chief William Bratton takes on L.A. crime 56

ARTS

GREAT PERFORMANCES: Seven actors who stood out in 2003 134

WORLD TRADE CENTER: Was its memorial chosen too soon? 138

VIEWPOINT: Fay Vincent on Pete Rose and errors 139

KIDS: The Teletubbies creator launches another TV show 140

YOUR TIME

HEALTH: Quitting smoking 147

TECH: Cool new TVs 148

LIFESTYLE: Atkins for kids? 150

PEOPLE: Britney's mini-marriage; Depp's new film; Ray Davies gets shot; Q&A with Pete Rose 153

ESSAY: Barbara Ehrenreich wants a female Viagra--now! 154

COVER: Photograph by Ghislain & Marie David de Lossy/Getty Images