"Many hundreds of years ago, the city of Ember was created by the Builders to contain everything needed for human survival. It worked... but now the storerooms are almost out of food, crops are blighted, corruption is spreading through the city and worst of all -- the lights are failing. Soon Ember could be engulfed by darkness...But when two children, Lina and Doon, discover fragments of an ancient parchment, they begin to wonder if there could be...

"This book looks at the different places light comes from, including natural and artificial sources. Discover the difference between a light source and a reflective object and how you can tell which is which. Look at our largest and most important light source -- the Sun -- and what happens when you take sunlight away. Explore light technology by finding out how we use lasers and fiber optics. And much more!"--

This book introduces light, a kind of energy that travels about 186,000 miles each second, and describes a beam of light traveling from the star Deneb to Earth to a person's vision.

An eccentric schoolteacher takes her class on wonderous educational field trips with the help of a magical schoolbus. Getting energized (topic: energy): The class is ready to plug in their "double trouble wheel of wonder" at the carnival when they discover all the outlets are taken. Gets charged (topic: electricity): The class is selling light bulbs. When they stop at Ms. Frizzle's house to sell her one, they find that her doorbell doesn't work. A...