Research Submersible

How Submarines Work

Alvin, the tiny submarine that showed the world the wreck of the Titanic, is being replaced by a $50-million research vehicle. How do you design a deep-sea craft that can stand up to underwater pressure?

Magnet Cows

How Magnets Work

Scientists are beginning to pay more attention to the fact that many animals may be magnetically oriented after pictures from Google Earth revealed that cows align themselves north-south. How does this magnetic sense work?

Amazing Telescopes

10 Amazing Telescopes

Pictures from the Hubble Space Telescope recently helped determine the nature of a galaxy in the Perseus cluster. But the Hubble's not the only telescope that's delivered amazing results.

Marathon Style

How a Marathon Works

When it comes to pounding the pavement for 26.2 miles, you might think that there are some tricks of the trade. According to one study that examined Olympic marathoners, there’s no formula for success when it comes to stride and arm movement.

Tongue Computing

How Your Tongue Works

A Georgia Tech research team has developed a system that would enable disabled people to control electronic devices with their tongues, a method that shows more promise than currently available options. Why is the tongue such a good bet?

Alcohol

How Alcohol Works

Several college presidents, including those at Duke, Dartmouth and Ohio State, are urging lawmakers to consider changing the legal drinking age from 21 to 18. They argue that current laws actually encourage dangerous binge drinking on campus.

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today's trivia

Who drilled the first successful U.S. oil well near Titusville, Pa., on this day in 1859?

trivia trivia