Most Popular What's the right age for parents to get their kids a cell phone? They can create text, images, and videos that can be widely distributed and uploaded to websites instantly. Parents really need to consider whether their kids are ready to use their phones responsibly and respectfully.
Aviation Control System The seven wonders of classical antiquity were architectural marvels, triumphs of human ego and raw power. The great achievements of today, however, are made possible by systems, infrastructure, and technologies that are invisible. Check back every week for a new wonder of the modern world.
When the weather is clear and all systems are go, as many as 3, flights can take off and land each day at Hartsfield-Jackson Atlanta International, the busiest airport in the world.
In recent years, the airport has expanded its flight capacity slightly, but not by increasing the number of runways. Watch the planes take off, and you might see a more subtle innovation.
Advertisement Because air traffic controllers are now monitoring departing aircraft with GPS-based systems rather than radar, the planes follow much more precise and predictable paths—some straight ahead, others instead banking several degrees to the left or right. This more accurate tracking lets controllers release more planes for takeoff into the same airspace while maintaining the required separation distance of 3 horizontal miles and 1, vertical feet.
By halving the time to clear the next flight for departure on some runways from two minutes to one, Atlanta controllers can now put as many as 12 more planes per hour into the heavens. In many ways, flying has become an unpleasant, increasingly expensive, and frequently contentious effort.
Animation by Lisa Larson-Walker This series will explore seven of these new wonders: None of them is monumental in scale, like the seven wonders of classical antiquity chronicled by Antipater of Sidon more than 2, years ago. The Great Pyramids of Giza and the Statue of Zeus at Olympia were feats of engineering, triumphs of man over nature and gravity, and above all accomplishments of ego and raw power.
And the modern, man-made wonders we marvel at—the Brooklyn Bridge, the Hoover Dam, the Panama Canal—are echoes of the ancient ones: Advertisement Like the ancient wonders, this list is somewhat arbitrary.
But there is a method to it. But monumental buildings and dams have been done before, even millennia ago. In the 21st century, our ability to thrive rests in large measure on the quality and power of the networks that transport data, information, and life-giving substances like water.
With land and infrastructure dollars hard to come by, subtle upgrades to the operating system are effectively increasing the capacity of our airports and skies, making it all run more smoothly and safely. Inthere were And serious glitches, on the ground and in the skies, have become more rare.
Between andthe likelihood of a piece of luggage being mislaid fell by more than half—from a rate of 7. That, in turn, is less than half the global rate of 6. The global system, of course, is far from foolproof, as the lost Malaysia Airlines Flight and its cousin shot down over the Ukraine made clear earlier this year.
But in the U. According to National Transportation Safety Board databetween and there were only two years in which no fatalities were recorded on scheduled commercial domestic flights. But in six of the last seven years, and in each of the past four, there have been none.
Between andthere were 2. All those people reached their destinations alive, with just 12 injuries. The Colgan Air crash outside Buffalo, New York, which killed 50 people, was the last major commercial disaster within our borders. There have been several fatal crashes involving cargo or chartered planes.
Traveling the skies may no longer feel like a miracle, but the systems that make it possible and increasingly more efficient deserve our adulation. Slowly, imperceptibly, and often invisibly, the FAA is rolling out what it calls the NextGen project, an alphabet soup of acronyms that describe a set of initiatives, procedures, and protocols that are improving the way we fly.
And the radar updates only once every 4. All of which requires planes to stay farther apart from one another in the air—clogging up vital air channels—and poses significant challenges in navigating over water, around weather, and in mountainous areas.
ADS-B is now enabling planes to fly around weather over open water in the Gulf of Mexico—saving time and fuel and sometimes completely sparing passengers from turbulence. And instead of exchanging vital information orally—which ties up radio frequencies and can result in miscommunications—pilots and controllers will rely on powerful data transmission and processing systems.
Inintroductory programs began in Memphis, Tennessee, and Newark, New Jersey, in which routine communications—clearance to take off, a change in route to avoid a thunderstorm—were effectively delivered to LCD screens via text updates.
There are also smaller, localized fixes.
As part of a small-scale experiment, the FAA deployed a bunch of sensors in the area to form a network, called wide area multilateration, that can keep much better tabs on planes. Yampa Valley can handle 15 to 20 arrivals safely each hour in conditions that would have previously required planes to be diverted to other airports.
Advertisement Throughout the air traffic control system, new protocols—based in part on new technology and on research and analysis—effectively expand flight capacity by enabling planes to flow in and out of airports and airspaces more quickly and with fewer hitches. At Boston Logan and other airports, GPS-based systems that allow for more precise tracing of planes mean they can now land when visibility is as low as 1, feet—compared with the prior standard of 2, feet.Technology Is Changing American Life Style.
The internet, e-commerce, mobile technology and social media have all transformed the way we live, learn, work, shop, and acquire information. Protecting cell phone users' privacy carriers should do even more to protect personal information.
these sites get customer information through fraud, such as posing as a . Information or data privacy refers to the evolving relationship between technology and the legal right to, or public expectation of, privacy in the collection and sharing of data about one's self.
Know your cellphone privacy rights. property and shouldn't be treated as such because they contain far more personal data than a person could reasonably carry. because these devices now. Dec 29, · The seven wonders of classical antiquity were architectural marvels, triumphs of human ego and raw power.
The great achievements of today, however, are made possible by . Until now, the courts have generally allowed arresting officers to seize and search cell phones, along with weapons, wallets, and other personal effects, on the grounds that these seizures were.