Did you see those two monkeys in the Times Science section last week? The healthy, sleek and young-looking one lives on a Spartan, calorie-restricted diet. The other, a paunchy, wrinkled arthritic with matted fur who looks decades older, eats about twice as much each day. Which monkey would you choose to be? Are you ready Read More

Did you see those two monkeys in the Times Science section last week? The healthy, sleek and young-looking one lives on a Spartan, calorie-restricted diet. The other, a paunchy, wrinkled arthritic with matted fur who looks decades older, eats about twice as much each day. Which monkey would you choose to be? Are you ready Read More

When Danny was a kid, he and his cousin Howie—an awkward, overweight, nerdy sort of boy who didn’t really fit in—used to play together at family gatherings. But one day, Danny, following his older cousin Rafe (“not the oldest cousin but the one they all listened to”), led Howie down into a mazelike cave somewhere Read More