Thomas, Jens

Provides information about the chemical element silicon, explaining what it is, its characteristics, where it is found, how it was discovered, and how it is used.

Explores the history of the noble gases and explains their chemistry, their uses, and their importance in our lives.

Provides descriptions of the physical characteristics, behaviors, and eating habits of wild jaguars, and includes photographs and facts on the classification and world distribution of the big cats.

Provides descriptions of the physical characteristics, behaviors, and eating habits of beetles, and includes photographs and facts on the classification and world distribution of the insects.