Human History: Out of Africa and the Ice Age Expansion
Tulip Mania: Why the Rarest Tulips Were So Valuable
Toddler Language Explosion: 7–9 Words a Day
Why Disease Killed More Soldiers Than Battle
Communication: How Plants Send Messages
Idaho Beaver Drop: When Beavers Parachuted Into the Wild
Life at the Extremes: How Far Can It Go?
Reproduction Research: Offspring From Same-Sex Parents
Lasius Ants: Queens That Hijack Other Colonies
Energy in the Human Body and Cells
Bioethics and Moral Status
Comets: Seeds of Life—or Just Cosmic Carriers?
Cells: The Giant Particle Inside You That Scientists Still P
Extinction and Survival
Cells: How One Cell Becomes a Human Body
Common Descent
Climate Change and Moving Species
Find a Tardigrade: The Wildlife on Your Roof
Human Mating: Why Partners Often Resemble Each Other
Delayed Postpartum Period
Reproduction and Synthetic Life
Fire and the Cooking Hypothesis in Human Technology
Hawaii’s Cliff Gardeners: Saving Brighamia
Africa: Cradle of Modern Humans