Considers the land, the fresh water, the surrounding sea, the ice, and the climate of northern North America during the past 20,000 years, and how life found its way into this strange landscape. Also considers how the fossil evidence is interpreted.

Fascinated with the archaeological dig that is going on near her Texas home, eleven-year-old Esther magically travels back in time to the Pleistocene era and discovers first-hand how people lived at that time.

"Almost 20,000 years ago, Earth's climate began to warm. Because of the changing temperatures, a miles-thick ice sheet started to shift. As the ice sheet moved, it carved deep pits in the land and left water in its wake. This melted ice filled the new cavities. This is the story of America's Great Lakes: Superior, Michigan, Huron, Erie, and Ontario. Enriched with stunning photographs and informative fact boxes and sidebars, this educational text sheds...

Describes an expedition to uncover and study a frozen mammoth in Siberia.

"Love or Loyalty? Destiny Hangs Upon a Single Choice... Living deep within the mysterious southern forests, the spiritual Ninkuraaja people are being hunted to the brink of extinction by bloodthirsty raiders known only as Woves. Nobody knows better than a Ninkuraa that a Wove deserves only death. But when a twist of fate places the life of an injured Wove into young Nyriaana's hands, she is horrified to discover that the destiny of this most hated...

Ice Age 2, the meltdown. Geyser blast!: Manny, Sid, and Diego must cross a dangerous geyser field on their way to a giant ark. Ice age 2, the meltdown. Join the pack!: Manny joins a herd of fellow mammoths, who struggle to escape a flood caused by the melting ice. Ice age, Dawn of the dinosaurs. All in the family: Manny and Ellie's friends, including two possums, a sloth, and a sabertooth tiger, anxiously await the birth of the mammoth's couple's...

"Who were the first humans to inhabit North America? According to the now familiar story, mammal hunters entered the continent some 12,000 years ago via a land bridge that spanned the Bering Sea. The presence of these early New World people was established by distinctive stone tools belonging to the Clovis culture. But are the Clovis tools Asian in origin? Drawing from original archaeological analysis, paleoclimatic research, and genetic studies,...

Describes the hazards of human life during the ice age.

Several hundred years after a change in the orbit of Jupiter sent the Earth into a new Ice Age, remnants of civilization battle over territory and technology. A generation has passed since Sam Monroe defeated the Great Khan, became King of Middle Kingdom, and ushered in an era of peace and prosperity, a time when Middle Kingdom grew even more powerful, driven by trade and emerging technology. In a grand gesture, Sam and Queen Rachel adopted the young...