Product Description: Ritalin and Related Drugs explores the various uses and abuses of these drugs, and explains to teen readers why such abuse should be avoided.

Product Description: Ritalin and Related Drugs explores the various uses and abuses of these drugs, and explains to teen readers why such abuse should be avoided.

Product Description: Obesity is a serious problem in the United States, and various methods and strategies for losing excess weight have become more and more popular. In addition to the multitude of diet and exercise programs available to consumers, new drugs that promote weight loss are constantly being developed and marketed...read more

Describes the problem of invasive water animals in general before discussing such specific examples as the nutria, the round goby, and the Chinese mitten crab, concluding with a look at methods of dealing with the issue.

Discusses the origins, symptoms, control, and treatment of invasive microbes, including viruses, bacteria, and fungi.

Describes the problem of invasive land animals in general before discussing such specific examples as the fire ant, the brown treesnake, and the wild boar, concluding with a look at methods of dealing with the problem.

Product Description: Aquatic systems are some of the most biologically diverse; however, invasive plants that grow in these areas challenge this diversity. Purple loosestrife, a herbaceous perennial, for example, is the equivalent of biological pavement when it invades a wetland by displacing all native species and creating a stand so dense ducks can no longer use it to breed...read more

Product Description: Invasive terrestrial plants are responsible for drying up rivers, poisoning horses, and poisoning horses, and pushing native plants to extinction. For example, kudzu, from Japan, was planted in the U.S. as a forage crop and to control erosion...read more