What is a Space Shuttle? How can something that can’t fly go into space? Do spiders spin webs in space? Do astronauts get space sick? This book answers all th
What is a Space Shuttle? How can something that can’t fly go into space? Do spiders spin webs in space? Do astronauts get space sick? This book answers all th
The Nile River has amazed people for thousands of years. It runs opposite from most river systems. It floods for miles, pushing back the desert and providing fa
Eclipses have amazed and terrified people for thousands of years. The sky grows dark. Daytime animals go to sleep and nocturnal animals wake up. Roosters crow a
Noses are wonderful things. They help us breathe. They are lined with mucous and hairs called cilia, which trap germs and tiny particles that can make us sick.