Electronic waste is mined for rare earth elements

Rare earth elements are the "secret sauce" of numerous advanced materials for energy, transportation, defense and communications applications. Their largest use for clean energy is in permanent magnets, which retain magnetic ...

The automobile and New York City

New York City's residential population, business population and number of tourists continues to grow, and our streets have become more crowded as pedestrians and motor vehicles compete for the same finite spaces. While many ...

Supercapacitors turbocharged by laxatives

An international team of scientists, including a professor of chemistry from the University of Bristol, has worked out a way to improve energy storage devices called supercapacitors, by designing a new class of detergents ...

NASCAR may be the fastest way to learn about physics

There's just something thrilling about traveling at high speeds. Throughout history people have always pushed themselves to go faster, whether on foot, on horseback, on a boat or on a bicycle.

Seeing moving objects around corners

David Lindell, a graduate student in electrical engineering at Stanford University, donned a high visibility tracksuit and got to work, stretching, pacing and hopping across an empty room. Through a camera aimed away from ...

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Automobile

An automobile or motor car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods. However, the term automobile is far from precise, because there are many types of vehicles that do similar tasks.

As of 2002, there were 590 million passenger cars worldwide (roughly one car per eleven people). Around the world, there were about 806 million cars and light trucks on the road in 2007; they burn over 260 billion gallons of gasoline and diesel fuel yearly. The numbers are increasing rapidly, especially in China and India.

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