The Checker Tobi non-fiction books: Cool knowledge transfer at eye level. Why is the forest important for our climate? What is a plastic vortex? And what about the manure in the fields? Our environment is full of exciting secrets. But what do we actually know about it? Checker Tobi asks the questions that interest children. He talks to experts and learns how we can protect our environment and why even small things matter. The first children's non-fiction book series featuring the popular TV star Checker Tobi, who checks a ton of questions and information in his usual style. Equipped with many photos from the TV shows, cool and informative illustrations, and plenty of interactive activities. Question checked!.