Word: gps
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When was the last time you shuffled off a commercial airliner and saw just one pilot in the cockpit? Probably never. Federal rules require two pilots for every airline flight, and all airliners must be equipped with GPS, weather-tracking and collision-avoidance systems. Airliners fly predetermined routes, usually on autopilot, and always land at airports. When the weather turns cloudy or the night turns dark, airline pilots have the training and equipment to fly using just their instruments. "You wouldn't get onto an airliner that can't fly through clouds," says Drew Ferguson, lead pilot for Metro Life...
...close to being extinct. Areas of the park's topography inflate like a bellows because of magma infusing into volcanic chambers about 6 miles below the surface. About 1,000 to 2,000 tremors a year (mostly small) have been recorded since 2004, when interpretation of satellite imagery with GPS readings indicated the caldera had been rising as much as 3 in. a year. The past week's number of tremors - about 400 - is considered unusual...
Without the unerring measurement provided by atomic clocks, we couldn't have landed a rover on Mars, the Internet wouldn't be able to process data superfast and GPS navigation would be a fantasy. These clocks are so precise that they literally redefined time: Once tied to the mean solar day, the official measure of a second was changed in 1967 to refer to the duration of more than nine billion periods of radiation between two levels of the cesium 133 atom...
...Armed with a list of several dozen homes listed for foreclosure, Hartigan drives into Dorchester. Following his GPS, he passes a street lined on both sides with three-level houses. All of these, he says, are occupied by tenants, frequently with the landlord living on the first floor...
...that range from Better Christmas List ($2.99), which tracks your budget (and recently added a "much-requested passcode lock option") to Hanukah Holiday List ($1.99), which is made by the same dude and does exactly the same thing (but costs, inexplicably, a buck less). Or check out the free GPS Christmas List, which sends you an alert when you're near a store that sells something on your list. (See the Top 10 iPhone Apps...