Rotation on an eight-shaped path

Chemical engineers at Ludwig-Maximilians-Universität (LMU) in Munich, Germany, have developed the first molecular motor that enables an eight-shaped movement.

Russia terminates robot Fedor after space odyssey

It's mission over for a robot called Fedor that Russia blasted to the International Space Station, the developers said Wednesday, admitting he could not replace astronauts on space walks.

The plus and minus of microtubules

Microtubules are protein polymers that assemble into dynamic structures, essential for cell division, shape, motility, and transport of intracellular cargos.

Why are there so few women CEOs?

Women comprise about 47% of the U.S. workforce, yet they make up barely a quarter of all senior executives at large U.S. public companies. Even worse, only about 5% of Standard & Poor's 500 companies have female CEOs.

Mystery solved about the machines that move your genes

Fleets of microscopic machines toil away in your cells, carrying out critical biological tasks and keeping you alive. By combining theory and experiment, researchers have discovered the surprising way one of these machines, ...

Russian humanoid robot boards space station after delay

It was second time lucky on Tuesday as an unmanned spacecraft carrying Russia's first humanoid robot docked at the International Space Station following a failed attempt over the weekend.

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 ...

First rollout of Ariane 6 mobile gantry

At Europe's Spaceport the Ariane 6 mobile gantry, a 90 metre-high metallic structure built to house Ariane 6 underwent a 97 m rollout test last week to mimic prelaunch.

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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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