The New York Times crossword puzzle can be tough, even if it isn't the Sunday issue! If you're stuck, we're here to help you ...

Lamar Hunt had a problem. The big game, the biggest of its kind ever held, was being planned. And it needed a name worthy of the occasion. Hunt, an oil tycoon’s son, had been crazy about football ...

The story is similar for each of the families I visit ... in rapid succession—one every 2.5 years instead of one every 3.5 years for hunter-gatherers. A population explosion followed; before ...