Search

Search results

Displaying 411 - 420

The Common Cold

Source: National Institute of Allergy and Infectious Diseases, National Institutes of Health. The problem. In the course of a year, individuals in the United States suffer one billion colds,…

Phoenix, Ariz.

Mayor: Greg Stanton (to Jan. 2016) 2010 census population (rank): 1,445,632 (6); Male: 725,020 (50.…

Gerald Rudolph Ford

Born: 7/14/1913Birthplace: Omaha, Neb. Gerald Rudolph Ford was born Leslie King Jr. in Omaha, Neb., on July 14, 1913, the only child of Leslie and Dorothy Gardner King. His parents were divorced in…

DK Science: Islands

CONTINENTAL ISLANDSCORAL ISLANDSISLAND ARCSFIND OUT MOREIslands are land masses entirely surrounded by water. They are found in oceans, seas, rivers, and lakes. Islands vary in size from tiny…

DK Science: Refraction

PUZZLE FOR THE EYEREFRACTION IN HEAT HAZEMIRAGEFIND OUT MORELight rays usually travel in straight lines, but when they pass from one material to another they can be forced to bend (change…

DK Nature: Prehistoric Life

WHAT WERE THE FIRST FORMS OF LIFE? WHAT WERE THE FIRST LIFE FORMS ON LAND? ICE AGESFIND OUT MORELife between the appearance of the first organisms, 3.8 billion years ago (bya), and the first…

DK Human Body: Skin

WHAT MAKES SKIN TOUGH? WHAT’S UNDER THE EPIDERMIS? HOW DOES SKIN CONTROL BODY TEMPERATURE? WHY DOES SKIN COLOR VARY? FINGERNAILSFIND OUT MOREAn outer covering of skin protects the body from injury…

Biggest Animal Hall of Fame

Biggest   Follow this slideshow to see images of and learn about the worlds' largest land and marine mammal, bird, fish, reptile, and insect. Prev Next Land mammal African…

2006 Olympics: Skeleton

Face first down an icy track by Gerry Brown and Christine Frantz Related Links 2006 Winter Olympics 2006 Skeleton Medal Standings Skeleton Through the Years…

Twilight: Movie Review

The film adaptation remains true to Stephanie Meyer's best-selling novel by Catherine McNiff Related Links Twilight TriviaTwilight QuizTwilight PollTwilight HangmanTwilight Page…