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Digital Security: Cyber Terror and Cyber Security
Digital Security: Cyber Terror and Cyber Security
These days, it is not unusual for 10- to 12-year-olds to be pub- lishing their own Web sites or for second and third graders to begin computer classes. At the same time, computer games are becoming increasingly popular as major publishing houses continue to churn out educational computer programs for children in pre- school....
Endocrine System (Your Body: How It Works)
Endocrine System (Your Body: How It Works)

As a critical part of human physiology, the endocrine system controls the chemical messengers that help our body function. Learn about how the endocrine system works with this great book.

The human body is an incredibly complex and amazing structure. At best, it is a source of strength, beauty, and wonder. We can compare the...

Modern Robotics: Building Versatile Machines (Milestones in Discovery and Invention)
Modern Robotics: Building Versatile Machines (Milestones in Discovery and Invention)

The Milestones in Science and Discovery set is based on a simple but powerful idea—that science and technology are not separate from people’s daily lives. Rather, they are part of seeking to understand and reshape the world, an activity that virtually defines being human.

More than a million years ago, the ancestors of...

Layers of the Earth (The Restless Earth)
Layers of the Earth (The Restless Earth)
The Earth is made of layers, each with its own unique characteristics and processes that make it a vital part of the planet. The solid inner core, for example, is the farthest layer from the planet's surface, yet it provides much of the heat needed to fuel dramatic surface phenomena such as volcanoes and earthquakes. Likewise, the outer core...
Health Science Experiments (Experiments for Future Scientists)
Health Science Experiments (Experiments for Future Scientists)

From choosing healthy food to taking care of one's teeth, and from exploring the ways infection is spread to studying nerves, the health science field is a broad category of study. This book presents activities about health science issues to encourage students to make lifelong, healthy choices.

...
How Race Car Drivers Use Math (Math in the Real World)
How Race Car Drivers Use Math (Math in the Real World)

The drivers have suited up and climbed into their cars. Engines roar. All eyes are on the checkered flag. The flag drops. The drivers roar off—challenging themselves, their teams, and other drivers to perform to the best of their ability. Math is used by the drivers, by their pit crews, and by race car designers before, during, and after a...

How Deep Sea Divers Use Math (Math in the Real World)
How Deep Sea Divers Use Math (Math in the Real World)

With a jump off the edge of a boat, deep sea divers enter another world. There is much to explore, since oceans cover more than 70 percent of Earth’s surface. Many types of scientists study the oceans. There are also people who dive to do their jobs underwater—or dive just for fun. These people all use math before, during, and after...

Ocean Ridges and Trenches (The Extreme Earth)
Ocean Ridges and Trenches (The Extreme Earth)
"Ocean Ridges and Trenches" immerses readers in the mysteries of the world's sea floors, from the surprising creatures of the Galapagos Rift to the devastating tsunamis of the Java Trench. This new volume in "The Extreme Earth" set reveals how 10 undersea mountain ranges and valleys came to be, how and why it has changed over...
The New York City Subway System (Building America: Then and Now)
The New York City Subway System (Building America: Then and Now)
In 1912, workers digging to create the Broadway Subway, north of Murray Street in lower Manhattan, hit a brick wall approximately 21 feet (6.4 meters) below the street surface. Breaking through the wall, the laborers came upon a tunnel 9 feet (2.7 m) in diameter and lined with eight- inch- thick (20.32 centimeters) bricks. Two rails led into a...
The Brooklyn Bridge (Building America: Then and Now)
The Brooklyn Bridge (Building America: Then and Now)
Opened on May 24, 1883, the Brooklyn Bridge is widely considered the greatest engineering achievement of the 19th century. This vision of designer John Augustus Roebling would be the longest bridge ever built at the time. During the 30-year construction period, the project withstood city politics, numerous construction conundrums and accidents, and...
The Empire State Building (Building America: Then and Now)
The Empire State Building (Building America: Then and Now)
It was to be a structure like no other - the largest and tallest skyscraper in the world. Initial plans for the Empire State Building called for an Art Deco masterwork to rise 1,000 feet, with 80 stories of rental space. The high-rise was to completely fill the 84,000-square-foot site of the former Waldorf-Astoria, then New York's most opulent...
Lake and Sea Monsters (Mysteries, Legends, and Unexplained Phenomena)
Lake and Sea Monsters (Mysteries, Legends, and Unexplained Phenomena)
Did you ever have an experience that turned your whole world upside down? Maybe you saw a ghost or a UFO. Perhaps you had an unusual, vivid dream that seemed real. Maybe you suddenly knew that a certain event was going to happen in the future. Or, perhaps you saw a creature or a being that did not fi t the description of anything known in the...
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