Teachers don't just teach; they can be vital personalities who help young people to mature, to understand the world, and to understand themselves. A good education consists of much more than useful facts and marketable skills.
When the International Space Station is finally launched, it will be fitted with special nickel-hydrogen batteries weighing a total of several tons, with a lifetime of just five years, requiring spares to be brought up from Earth at literally astronomical expense.
The public is eager for stories of True Cybercrime, and the media is happy to glamorize the subject. But when teenagers take the bait and live out our fantasies for us, we punish them for frightening us too much.
Unsurprisingly, an uninterruptible power supply (UPS) - once a luxury for room-sized computer installations - is now a standard item both in home offices and all the networked tiers above, protecting servers and online service providers, Internet backbones, phone companies, and even cable TV networks.
In Finland in the winter, when the sky is totally choked with clouds, the country becomes one big sensory deprivation tank.
If low-temperature fusion does exist and can be perfected, power generation could be decentralized. Each home could heat itself and produce its own electricity, probably using a form of water as fuel. Even automobiles might be cold-fusion powered.
If smart technology can transform 3-D from a crude novelty to a genuine visual enhancement, why shouldn't a sophisticated odor synthesizer follow a similar path?
At 3-D Imax theaters, audiences have shown they are willing to pay a premium to wear headgear fitted with liquid-crystal lenses synchronized via infrared signals with the movie projector, which runs at twice the normal frame rate. These movie viewers plumb new depths in depth perception - they experience extreme realism.
Even if major funding is obtained for cold fusion, conceivably the phenomenon could suffer from problems as intractable as those of hot fusion. It may never work reliably or generate enough energy to be commercially viable.
The idea of an e-book has been around since the late 1970s, when researchers at Xerox PARC got on the case. Their prototype used millions of little magnetic particles, black on one side and white on the other, loosely embedded in the surface of a soft sheet of rubber.
Merchandise from Wal-Mart has become as ubiquitous as the water supply. Yet, still, the company is rebuked and reviled by anyone claiming a social conscience and is lambasted by legislators as if its bad behavior places it somewhere between investment bankers and the Taliban.
In the early 1970s, phone phreaks manipulated the long-distance system using blue boxes that they built from sketchy photocopied schematics that were often riddled with errors. Not many had the skill to do this. Phreaking was restricted to a select few.
Watching cold fusion is like watching water boil in slow motion. First, sufficient deuterium has to penetrate the palladium electrode. This can take a few weeks. Then, if excess heat is generated during the next month or two, accurate temperature readings require extreme precautions to exclude environmental effects.
When you shop online, wouldn't you like to sample the bouquet of wines, the aroma of cigars, or the subtle fragrance of flowers before surrendering your credit card number? Surely more companies will want to aromatize their Web presence when they realize there's a device that can produce genuinely pleasing, authentic fragrances.
The landscape of the Net has changed; that cyberfrontier of the past has become a teeming city of people, transactions, and businesses.
