Photographs help trace the migrations of monarch butterflies from northern North America to the Oyamel forest of Mexico, describing the harsh conditions they face and the survival methods they use during the migration.
A chronological history of the migration of humans from prehistoric times onward discusses the causes, means, and effects of mass migrations on language, societies, and empires.
Explores how animals around the world are driven by natural instinct to travel great distances each year and describes the migrations of the zebra, walrus, and Christmas Island red crab.