Life and Oxygen: When Poison Sparked Complexity
Toddler Self-Discovery: Pointing and the Mirror Test
Sexual Reproduction: More Than Two Sexes
Idaho Beaver Drop: When Beavers Parachuted Into the Wild
Why Disease Killed More Soldiers Than Battle
Society: Is War in Our Nature?
Tulip Mania: Why the Rarest Tulips Were So Valuable
Humans: Engineered for Endurance
Human Mating: Why Partners Often Resemble Each Other
Delayed Postpartum Period
Mitochondrial Eve: What She Really Means
Fire and the Cooking Hypothesis in Human Technology
Cells: The Bacterium You Can See Without a Microscope
Life in the Universe: Where to Look
Tardigrades: Tough, Not Invincible
Humans: Emotional Tears and Mental Time Travel
Why Sexual Reproduction Is a Puzzle
Post-classical History: How Plague Reshaped the World
Common Descent
Climate Change and Moving Species
Agriculture — Animals Invented Farming First
Life’s Big Leap: From Single Cells to Many
Human History: Out of Africa and the Ice Age Expansion
Hawaii’s Cliff Gardeners: Saving Brighamia