Introduces the megalodon, a prehistoric shark that was up to sixty feet long, and describes how scientists learned about this animal through fossils found around the world.

"What was life really like for a knight in medieval times? Why could only boys from rich families afford to become knights? How did a knight and his warhorse fight as a team? And is it true that knights could become famous, like today's top sports stars? Learn all about these skilled warriors in The Life of A Medieval Knight"--Back cover.

Speculates on what it would be like to travel to Mars and form a settlement there, including how to deal with Mars' atmosphere, how scientists create Mars simulations on Earth, and how food would be grown on Mars.

Presents an introduction to the Japanese warriors known as samurai, including their history, lifestyle, weapons, training, and social customs.

Describes some unusual ways that animals protect themselves, including squirting blood, releasing slime, and vomiting on predators.

Examines such phenomena as flying saucers, the Bermuda Triangle, and people who float, hypnotize, and explode.

Presents miscellaneous facts about animals all over the world.

Presents odd facts about the human body and the way it works.

Describes how to survive in harsh desert conditions and suggests ways to find food and water, build shelter, avoid danger, and signal for help.