The switch goes up -- the light goes on,The switch goes down -- the light goes off.

With the same authority, insight, and unique ability to bring music to life on the printed page t...

Did you know that an oil spill occurs somewhere in the world almost every day of the year?

The remarkable story of a disabled man

So many mysterious things appear when we look up at the sky. And then there are the bodies we can...

An updated edition, provides new information and discoveries about the planet Mars, including myt...

From swallowing a cup full of needles to tightrope-walking across the Grand Canyon, these top 20 ...

How is a hurricane born? What color are tornado funnels? The fascinating answers to these and man...

Provides unusual facts and information about technology, revealing that penicillin was invented b...

Find out all about the many kinds of webs spiders spin in this level 2 Let′s Read and Find Out.

Ka-choo! Brrr. Yawnnnn.

Describes spectacular and interesting animal traits, including how draco lizards glide, how elect...