"A dog's nose is 300 times more powerful than a human nose, so it's no wonder that dogs use their incredibly advanced sense of smell to do some very important jobs. Dorothy Hinshaw Patent explores the various ways specific dogs have put their super sniffing ability to use: from bedbug sniffers to explosive detectors to life-saving allergy detectors...and more. This dynamic photo-essay includes first-hand accounts from the people who work closely with...

Describes the physical characteristics and behavior of various kinds of tropical butterflies.

Explains the forces that have created the geological features on the earth's surface.

Chronicles the activities of the homesteaders who settled the vast American prairies during the late nineteenth and early twentieth centuries.

Celebrates of the bond between humans and their canine companions, discussing scientific insights that demonstrate how sharing one's life with a dog reduces stress, provides companionship, and increases safety.

Provides a global perspective on environmental issues while demonstrating the concept which encompasses the many forms of life on earth and their interdependence on one another for survival.

Text and photographs describe how different varieties of wheat are planted, harvested, and processed into foods.

"Prairie dogs are dubbed a keystone species for good reason because the burrows they dig are used by dozens of other animals, from insects and spiders to rattlesnakes, salamanders, owls and more. The highly endangered black-footed ferret depends almost completely on prairie dogs for food, and may also live in their abandoned burrows. In addition, prairie dog activity makes the grass areas around their burrows especially nourishing for grazing animals...

Describes the characteristics of the North American prairie, the plants and animals found there, and the efforts made to preserve and restore the landscape that once stretched unbroken from southern Canada into northernmost Mexico.