The weather on Earth is always changing. One day it's cloudy, the next day it's sunny, and the day after that - who knows? Meteorologists are scientists that can predict the weather. But how do they do it? What causes these changes in weather?
Welcome the sights and sounds of the world with the Footprint Reading Library. This content-based reading series presents fascinating real-world stories in three formats: print, audio, and video from National Geographic. The Collection includes all books