Technologys Child

Try these experiments to learn how sound waves travel through the air to make your eardrums vibrate!

Dandelions grow in the yard. Some are white and some are yellow. You can pick the yellow ones, and the wind makes the white ones dance in the air.

The human body is amazing. Your blood makes up about 8% of your body weight. On average, your heart will beat more than 3 billion times in your lifetime! Doctors and scientists make choices every day about how to keep our bodies going. But what would you change if you could? Would you choose to have super strength or super speed? Would you rather have no bones or no muscles?

Some people say that space is the final frontier. But robots are making space much less mysterious. Robots and robotic probes have been exploring the planets and helping astronauts do research since the 1970s. Listen to learn about incredible space robots and the amazing things that they have discovered about our solar system.

Planea por el Sistema Solar para atestiguar el primer concurso de planeta favorito, presentado nada más y nada menos que por el antiguo noveno planeta, ahora conocido como Plutón, el planeta enano. Los lectores serán los jueces ya que el sol no puede seleccionar a un favorito y los meteoros se van a dejar una estela. ¿Cuál será el planeta ganador afortunado? ¿Podría ser el mensajero rápido Mercurio; o "luz en sus pies", Saturno; o el calientehumeante, Venus?

Heroes of History is a unique biography series that brings the shaping of history to life with the remarkable true stories of fascinating men and women who changed the course of history. Known during the Civil War as the "Angel of the Battlefield," remarkable Clara Barton helped to save countless lives on the frontlines of battle. She went on to find thousands of missing soldiers and to organize the American National Red Cross. An incredible story of service and sacrifice.

Nikola Tesla was a scientist and inventor in the late 1800s and early 1900s. Among his many inventions and experiments, he helped create the modern electricity system. Learn more about Tesla's life as a famous inventor!

David Aguilar was born missing part of one arm, a small detail that seemed to define his life and limit people’s ideas of who he was and who he could be. But in this funny and heartfelt memoir, David proves that he can throw out the rulebook and people’s expectations and maybe even make a difference in the world—and all with a sense of humor.

Frank Zamboni created the ice-resurfacing machine, and ice-based sports would never be the same!

The massive grassy African savanna is filled with the hunting activity of predators and their prey. The stamina of the hyena allows the animal to hunt its prey until it is too tired to fight. The lion’s strength makes its attacks swift and severe. But which animal is the fiercest of the ecosystem? Compare and contrast each animal’s features and skills before you declare the winning predator.

The masters of sky and sea confront each other in this monstrous battle. Few beasts can match the power of a fire-breathing dragon. But huge sea monsters are also fearsome forces of nature. Discover the weapons and abilities of these mighty beasts, and then get ready for a fiery, head-to-head fight.

People have been traveling over water to get from here to there for thousands of years, but not in these vehicles! Long ago, people could only dream of what modern technology would bring. Take a tour of some of the most unique and fascinating watercraft around.

Nuclear weapon bunkers keep the world's dangerous nuclear weapons safe. Guards, electronic security systems, and barriers protect the bunkers. Learn more about these high-security places!

Discover the origins of water on Earth...with a talking comet! In this audiobook, an enthusiastic comet speeds through the universe, from the far reaches of space to planet Earth. Along the way, this rocketing rock reveals how our precious blue planet became, well, blue! This laugh-out-loud nonfiction book will have listeners young and old thirsty for more science.

Travel to England. Find out the facts about this country in Europe.

Welcome to Greece! Gaze at the crumbling walls of ancient ruins. Cross the Aegean Sea to a volcanic island. Learn about the people, places, and traditions of the country where the Olympic Games began.

Behind the flips, splashes, and speed of Olympic water sports, science is at work. Gravity and centrifugal force are at work as a diver spins and flips before splashing into the water. Olympic swimmers shave their bodies to reduce drag as they zip through the water. Find out how science is involved in all your favorite water events and how athletes take science into account in their quest for the gold medal.

In audiobook format, uses vampires to explain the science of cells.

Learn about ducks and their ducklings.

An introduction to the lungs and how they function. The concepts of blood and oxygen are discussed, as well as asthma.