Earth

Earth is moving through space at roughly 66,000 miles per hour (107,000 km/h), and its outer shell is split into enormous plates that slot together like pieces of a jigsaw. Beneath the waves lie mountain ranges, and the seas hold so much salt that, if it were spread across the planet, it would form a layer as tall as a 50-story building. These are only a few of the many surprising details gathered here to introduce the world we live on, the third planet from the Sun.

Written for readers around seven or eight years old, the book blends science with technology and simple math. It offers recent findings, unusual facts, and striking photographs of both Earth and space, along with plenty of unexpected discoveries and chances to pause and learn.