"In Biomes: Discover the Earth's Ecosystems with Science Activities for Kids, middle school kids journey across the planet and visit the world's nine terrestrial and aquatic biomes to learn about the distinctive climates, geologies, resources, and organisms that can be found there. Kids will wander through forests, sizzle in deserts, shiver in the tundra, slog through marshy waters, and plunge beneath the seas to explore coral reefs. Along the way,...

Thousands of prehistoric footprints left by Ice Age humans and animals stretch for miles across the blinding white surfaces of New Mexico's White Sands National Park. The phenomenal collection of prints preserves a unique series of snapshots of life and behavior, capturing moments when humans crossed paths with extinct Ice Age beasts, including enormous ground sloths and mammoths.