There are more than 3 million certified scuba divers in the world, yet only two places to overnight beneath the sea. Both habitats are off the coast of Key Largo, Florida, and both were born as deep-sea labs.

1. On-Air Schedule:

Four computers (two on each side of the room) display play lists as they're chosen by the DJs.

2. Repeater Status Map:

More than 800 repeaters amplify XM's signals, ensuring you don't lose reception under bridges or
in tunnels. A green dot means the repeater is fine, red means it needs maintenance.




3. Parabolic Speaker:

Broadcasts any of XM's stations into the room.




4. Satellite Projection Screen:

Arsenic is one of history's most infamous poisons. The Roman Emperor Nero used it to murder his rival to the throne, and some theorists hold that the deposed Napoleon Bonaparte was betrayed with a dose from trusted deputies. Yet, many Americans unwittingly drink toxic quantities of the stuff right from their taps.

You can't wear a gas chromatograph," says Nicholas Abbott, a chemical engineering professor at the University of Wisconsin-Madison. He's referring to a 50-pound device used to check air for chemical poisons. These days, when terrorism is a concern to all, there's considerable demand for a chemical sensor no larger than a badge.

With the touch of a button, a motorist can adjust a car's seat, mirrors, and stereo system; so why can't we adjust our bathrooms as easily? Architects at the University at Buffalo have already built two prototypes that can be personalized to fit our needs.

Both bathrooms have sinks, toilets, and showers that move up and down for people of different heights, as well as sinks and showers that move sideways to make space. In one prototype, the bathroom's components are on interchangeable panels, with multiple plumbing hookups built into the walls.

If you think soy is good for nothing but tofu burgers, think again. The Princeton, Illinois-based Urethane Soy Systems Company (USSC) is determined to use soy in everything from cars to carpets, all through the magic of polyurethane.

Although they may have other talents, few astronauts are much good at sleeping in space. NASA researchers have been studying the problem by hooking up space shuttle crews to all sorts of sleep-monitoring devices. The mystery remains unsolved, but one surprising discovery has been made: There's virtually no snoring in space.

It was like falling in love," says Norwegian artist Vebjorn Sand. "I just couldn't get it out of my mind." Six years ago, while visiting an exhibit of the works of Leonardo da Vinci, Sand became captivated by a model of a bridge that, in 1502, da Vinci had proposed building for Sultan Bajazet II, ruler of the Ottoman Empire. The Sultan wished to span the Golden Horn, an inlet between the Turkish cities of Pera and Constantinople (known today as Istanbul). At that time, it would have been one of the world's largest bridges.

There are 23,000 species of reptiles, birds, and mammals in the world and newly-discovered Sphaerodactylus ariasae is the smallest of all. The Jaragua Sphaero, or dwarf gecko, measures three-fourths of an inch from nose to tail tip and weighs just 0.00455 of an ounce (by contrast, the largest animal, the blue whale, is 1,600 times longer and more than 1 billion times heavier). The lizard lives on the island of Beata in the Dominican Republic where, according to its discoverers, biologists Blair Hedges and Richard Thomas, its habitat is threatened by logging.

The corporate jet has long been the ultimate status symbol, but Renaissance Research is out to challenge jet-powered primacy. The California-based company is bent on designing the fastest propeller plane in history and, ultimately, on producing an alternative to today's midsize jets.