Presents information about precious gems, including where they can be found, how some are formed, and what gives some gemstones their color.

Most days, you probably don't think too much about the weather. You might wear a coat on a cold day or carry an umbrella when it rains. But weather can be unpredictable. Downpours can flood entire cities, raging winds can knock down buildings, and huge piles of snow can block roads. Readers will find out how scientists study some of the most extreme weather on Earth, from violent tornadoes to deadly hailstorms. They will also learn about some of the...

"This book covers the habits, physical features, reproduction, and life cycle of birds."--

Introduces different types of rocks and where they are found.

Introduces readers to reptiles.

"Learn all about ADHD, from what causes it and how it affects people to how it is diagnosed and treated"--

"This book explains how grains are grown, harvested, and processed. It also explores the debate around genetically modified crops"--

Learn what organic foods are and where they come from.

Examines the world's biggest amphibian, including what it eats, how it breathes and why they are in danger of disappearing.

"Autism affects millions of people around the world by limiting their ability to communicate and interact socially with other people. Some face minor difficulties, while others are so severely affected that they require special assistance throughout their lives. Readers will find out what it is like to live with autism, what causes this condition, how it is treated, and more."--Publisher's website.