Cycles of Change

Walking into a language classroom at fifty feels, to most people, like walking into a room designed for someone else. The assumption is old and stubborn. Children absorb languages like water into dry cloth, and adults do not. The brain, according to this story, closes its doors to serious [...]

Salt is a rock. Most people today walk past it on a grocery store shelf without thinking about it. But for most of human history, a small bag of salt was the difference between eating through winter and starving before spring arrived. The science behind it is simple. When you pack raw meat or fish [...]

The Geographic Gateway A map of North America shows tall mountain ranges on the eastern side, standing between the ocean and the flat interior continent. Rivers flow down from these mountains, but most travel only east or south, which provides little help for travelers moving west. Central New York [...]

A worker in a brightly lit factory in Hsinchu, Taiwan, lowers a silicon wafer into a chemical bath. The silicon undergoes a series of precise acid washes and laser etchings to carve billions of microscopic pathways into the metal. The factory consumes enough electricity each day to power a small [...]

A sapling grows in a drought-stricken valley. The lack of surface water forces the tree to build dense, stunted wood and abandon vertical height. The root system spreads exceptionally wide and remains extremely shallow, desperately hunting for any trace of surface moisture. The cellular [...]

A population endures a severe food shortage. Caloric intake drops from a sustaining baseline down to 500 calories a day. The human body reacts to this deficit by consuming its own fat reserves and breaking down muscle tissue to keep the brain and vital organs functioning. For a pregnant woman [...]