Book excerpt: Some people do their jobs in Arctic blizzards or fierce storms on the high seas. For some people, crawling through dark caves, climbing into sewers, searching through animal droppings, or even driving a car off a cliff is all in a day's work. Who does jobs like these, why do they do them, and how do they stay safe doing them? You'll find out in Dirty and Dangerous Jobs. The men and women who drive race cars get a lot of attention. But behind the scenes, all of these people have a pit crew that helps them win races. Pit crew workers must change tires, add fuel, and make repairs at lightning speed during every race. It's greasy, smelly, often dangerous work-and they wouldn't have it any other way. Book jacket.