Library of why?

Provides information about the North and South Poles, explaining what they are, how they were formed, and why they are so cold, and looking at the types of plants and animals that live at the poles.

Provides information about Earth, explaining what it is, what is it made of, how it was formed, and why it is round, and discusses the movement of the planet, changing seasons, and navigation.

Discusses scientific theories regarding the disappearance of the dinosaurs including disease, climate changes, starvation, and a meteor collision.

Provides answers to such flight-related questions as "How do airplane wings work?" "What is thrust?" and "How do helicopters fly?".

Provides answers to such questions about the weather as "What is the atmosphere?", "How does water get into the clouds?", "What makes lightning happen?", and "What is the water cycle?".

Discusses the nature, causes, effects, and uses of tides.

Discusses the atmosphere, wavelengths of light, clouds, rainbows, and what causes the sky to be different colors.

Provides answers to such questions about trees as "How do trees grow?", "How do trees change with the season?", and "How do leaves make food for the tree?".