Book excerpt: For many jobs in science and math, young adults don't need a college education and may be able to find employment soon after high school. In this practical volume, science and math types learn about jobs in civil engineering, agriculture, dental laboratories, electronics, quality control, fiber optics, hazmat, water systems, aerospace, occupational health and safety, real estate, loans, and surveying. Each career overview includes tips on career preparation and future prospects. Sidebars offer profiles on specialized jobs or professionals, and each chapter contains annotated career information on associations and organizations, books and periodicals, videos and apps, and Web sites.