Nitrous oxide, N2O, is a fuel racing crews use to propel their cars hundreds of miles an hour. Under intense pressure, it allows the same engine to produce more power. Blends of N2O fuel rockets. They might include, for example...
The weekend of El Grito (the Scream), when Mexico celebrates its rebel yell against Spain, is also the weekend when the season’s first pilgrims arrive in the town of Real de Catorce, high on a sun-blitzed mountaintop in the deserts of San...
