White lines on nails, medically referred to as leukonychia, are a common occurrence and are usually harmless. These lines can appear as small spots, horizontal bands, or lengthwise streaks, often ...

Lottery and scratch-off games have long captured the imagination of players with various theories and superstitious beliefs. The latest one picking up steam on social media is the “white-line theory.” ...

For as long as the lottery has existed, people have been trying to game the system to have it work out in their favor. From gambling on their lucky numbers to buying scratch-off tickets from certain ...

Contrails — the little white lines streaming out of an airplane — form when the hot air from the exhaust mixes with the cooler temperature and low-pressure environment.