Health

Boosters hope bicycling boom outlasts the pandemic

It doesn't seem right to put "silver lining" and "pandemic" in the same sentence. But the past year of COVID-19 has been a boon for bicycling, an indisputably healthy activity.

Diseases, Conditions, Syndromes

How many people get 'long COVID' and who is most at risk?

A few months ago, a young athletic guy came into my clinic where I'm an infectious disease physician and COVID-19 immunology researcher. He felt tired all the time, and, importantly to him, was having difficulty mountain ...

Diseases, Conditions, Syndromes

To fight virus' spread, Vienna turns to bike couriers

Hoping to increase the number of coronavirus tests, the Austrian capital Vienna has a new weapon: instead of pizzas, bike couriers are now delivering Covid-19 tests.

Diseases, Conditions, Syndromes

Cycle power: Bikes emerge as a post-lockdown commuter option

Halfway through his 30-minute bike ride to work, police ordered Juan Pasamar to dismount, accusing him of breaking Spain's coronavirus lockdown rules by exercising in public. The officers were not buying his explanation he ...

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Bicycle

A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist.

Bicycles were introduced in the 19th century and now number about one billion worldwide, twice as many as automobiles. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for such uses as children's toys, adult fitness, military and police applications, courier services and bicycle racing.

The basic shape and configuration of a typical upright bicycle has changed little since the first chain-driven model was developed around 1885. However, many details have been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for particular types of cycling.

The invention of the bicycle has had an enormous impact on society, both in terms of culture and of advancing modern industrial methods. Several components that eventually played a key role in the development of the automobile were originally invented for the bicycle, including ball bearings, pneumatic tires, chain-driven sprockets, and spoke-tensioned wheels.

This text uses material from Wikipedia, licensed under CC BY-SA