Clutch Size in Birds
The Palaces of Minoan Crete
Early Horses
The Commercialization of Pearl River Agriculture
How Effective Are Structural Plant Defenses?
Writing History
Invading Algae
The Impact Origin of Lunar Craters
Electrical Energy from the Ocean
Minoan Palaces
The Development of Chinese Dynasties
Nineteenth-Century Theories of Mountain Formation
Why Snakes Have Forked Tongues
Pacific Ecosystems
Salt and the Rise of Venice
Predicting Volcanic Eruptions
Crop Engineering
Human Activity and the Archaeological Record
The Actor and the Audience
Visions of the Land
The Pit Organs of Snakes
Early Research on Air
Characteristics of Pterosaurs
Auditory Perception in Infancy
The Sumerians and Regional Interdependence
Structure and Composition of Comets
Plant Adaptations to Cool Environments
The Use of Jade and Bronze in China
Physical Properties of Minerals
Conditions on Earth When Life Began
Underground Life
The Revolution of Cheap Print
Building Materials
Dealing with Extreme Cold
The Development of Instrumental Music
Pinyon Pines and Pinyon Jays
Pests and Pesticides
The Debate over Spontaneous Generation
Alfred Wegener's Theory of Continental Drift
Representative Government in Colonial North America
Mesolithic Complexity in Scandinavia
Evolution of the Flowering Plants
Elements of Life
The Commercialization of Lumber
Evidence of the Earliest Writing
Rain Forest Soils
Stream Deposits
Natufian Culture
Memphis: United Egypt’s First Capital
Population Growth in Nineteenth-Century Europe
American Railroads
The Achievement of Brazilian Independence
Ancient Coastlines
Movable Type
Chinese Population Growth
Determining Dinosaur Diet
Roman Cultural Influence on Britain
Termite Ingenuity
The Origin of Writing
The Commercial Revolution in Medieval Europe
The Beringia Landscape
Wind Pollination
From Fish to Terrestrial Vertebrates
The Use of the Camera Obscura
The Empire of Alexander the Great
The Origin of Petroleum
Explaining Dinosaur Extinction
Callisto and Ganymede
Navajo Art
Climate of Venus
Latitude and Biodiversity
Amphibian Thermoregulation
Early Writing Systems
The Extinction of Moa
Microscopes
The Racoon's Success
Thales and the Milesians
Direct Species Translocation
Soil Formation
Early Ideas about Deep-sea Biology
Seasonal Succession in Phytoplankton
The Development of Social Complexity
Protection of Plants by Insects
Islamic Art and the Book
Railroads and Commercial Agriculture in the Nineteen
Extinction Episodes of the Past
Distributions of Tropical Bee Colonies
Siam, 1851-1910
Speciation in Geographically Isolated Populations
Early Childhood Education
The Pace of Evolutionary Change
The Invention of the Mechanical Clock
The History of Waterpower
Groundwater
Buck Rubs and Buck Scrapes
Predator-Prey Cycles
Crafts in the Ancient Near East
Survival of Plants and Animals in Desert Conditions
Sumer and the First Cities of the Ancient Near East
The Evolutionary Origin of Plants
The Decline of Venetian Shipping
Moving into Pueblos
Breathing During Sleep
Seventeenth-Century Dutch Agriculture
Rock Art of the Australian Aborigines
The Allende Meteorite
The Birth of Photography
Autobiographical Memory
The Origins of Agriculture
Westward Migration
Early Settlements in Southwest Asia
Discovering the Ice Ages
Succession, Climax, and Ecosystems
Lightning
The Mystery of Yawning
Symbiotic Relationships
Animal Signals in the Rain Forest
Development of the Periodic Table
Planets in Our Solar System
A Warm-Blooded Turtle
Mass Extinctions
Pastoralism in Ancient Inner Eurasia
Maya Water Problems
Types of Social Groups
Reflection in Teaching
Competition
Which Hand Did They Use
Ancient Egyptian Sculpture
Chinese Pottery
Colonizing the Americas via the Northwest Coast
The Rise of Teotihuacán
The Geologic History of the Mediterranean
Powering the Industrial Revolution
Minerals and Plants
Deer Populations of the Puget Sound
Architecture
Desert Formation
The Origins of Theater
Biological Clocks
Transition to Sound in Film
Orientation and Navigation
Variations in the Climate
Extinction of the Dinosaurs
Ancient Rome and Greece
William Smith
The Origin of the Pacific Island People
Cave Art in Europe
Depletion of the Ogallala Aquifer
The Origins of Cetaceans
Timberline Vegetation on Mountains