Discusses symptoms of the various types of headaches, including migraine, cluster, and muscle contraction (tension) headaches, and explores what is known of their causes and cures.
Describes the structure and characteristics of the Amoeba, Paramecium and other members of the "circus" that Leeuwenhoek discovered in a drop of water.
Describes the structure and characteristics of the Amoeba, Paramecium and other members of the "circus" that Leeuwenhoek discovered in a drop of water.
Discusses the evolution of dogs and their uses throughout history and includes information on different breeds, training, care as pets, relationship with people, and other relevant topics.
Discusses the pros and cons of keeping various small pets such as chinchillas, hamsters, gerbils, and mice and examines their care, feeding, and emotional needs.
Examines the pros and cons of keeping less common dog breeds such as akitas, chihuahuas, and Saint Bernards, discussing their care, feeding, and emotional needs.
Discusses the pros and cons of owning exotic pets such as armadillos, llamas, monkeys, potbellied pigs, and sugar gliders, and offers advice on their care, feeding, and emotional support.
Describes the physical characteristics and behavior of the grizzly bear, its decline in numbers due to human population growth and activities, and the efforts being made to maintain its population.
