Examines the different strategies which animals use to stay alive during cold weather, including migration, hibernation, and changing color.

Introduces many kinds of animals and their offspring from birds and whales to rabbits, elephants, and giraffes showing how they are fed, nurtured, and taught how to live safely.

From the colorful clownfish to the menacing hammerhead shark, from the familiar tuna to the exotic octopus, these are a few of the sea animals that children will encounter if the big book, Life in the Sea. This, and the answers to questions such as is a seahorse really a fish? Is a sponge really an animal?

Looks at the history of Mars, summarizes current scientific knowledge based in part on the Mariner and Viking space probes, compares its features with Earth's, and discusses future plans for studying and exploring the planet.

We share our world with millions of micro-organisms. This book explains what germs are, how bacteria and viruses affect the human body, and how the body fights against them.