Fermented foods are staples of diets around the world. What makes them possible? Microbes.
Notable for their simplicity, some of Darwin's experiments are ideal science lessons for children—for example, his weed plot experiment or soaking seeds in salt water.
New research on fossil galls—abnormal plant growths caused, in this case, by tiny wasps—helps reconstruct the local habitats of Southern California at the end of the last Ice Age.
Your skin is patchwork of ecosystems—some moist and humid, others hot and dry—that is as diverse as any continent.