Genetic defect leads to motor disorders in flies

In their study, the research groups looked at a protein called Creld. A study from Bonn had recently been able to demonstrate that Creld plays an important role in the development of the heart in mammals. "We wanted to find ...

First electric nanomotor made from DNA material

A research team led by the Technical University of Munich (TUM) has succeeded for the first time in producing a molecular electric motor using the DNA origami method. The tiny machine made of genetic material self-assembles ...

Marking a magnetic memory milestone

Computers and smartphones have different kinds of memory, which vary in speed and power efficiency depending on where they are used in the system. Typically, larger computers, especially those in data centers, will use a ...

New catalysts make efficient use of precious metals

Nanoscientists from Utrecht University have devised a new and promising way to make catalysts in which the amount of precious metals needed is reduced by a factor of 10. Those precious metals are scarce, but essential in ...

Virgin Galactic taps Boeing subsidiary to build motherships

Virgin Galactic announced Wednesday that it is partnering with a Boeing subsidiary to manufacture the next generation of the twin-fuselage aircraft used to carry aloft the space tourism company's rocket ship.

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Motorcycle

A motorcycle (also called a motorbike, bike, or cycle) is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.

Motorcycles are one of the most affordable forms of motorised transport in many parts of the world and, for most of the world's population, they are also the most common type of motor vehicle. There are around 200 million motorcycles (including mopeds, motor scooters, motorised bicycles, and other powered two and three-wheelers) in use worldwide, or about 33 motorcycles per 1000 people. This compares to around 590 million cars, or about 91 per 1000 people. Most of the motorcycles, 58%, are in the developing countries of Asia — Southern and Eastern Asia, and the Asia Pacific countries, excluding Japan — while 33% of the cars (195 million) are concentrated in the United States and Japan. In 2006 China had 54 million motorcycles in use and an annual production of 22 million units. As of 2002[update], India with an estimated 37 million motorcycles/mopeds was home to the largest number of motorised two wheelers in the world. China came a close second with 34 million motorcycles/mopeds.

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