Engineering

'Artificial leaf' successfully produces clean gas

A widely-used gas that is currently produced from fossil fuels can instead be made by an 'artificial leaf' that uses only sunlight, carbon dioxide and water, and which could eventually be used to develop a sustainable liquid ...

Energy & Green Tech

Magnetism: An unexpected push for the hydrogen economy

Humankind has entered uncharted territory: atmospheric CO2 levels have soared to a record-breaking 415 ppm for the first time in human history. The need to find a sustainable alternative to CO2-producing fuels is urgent. ...

Energy & Green Tech

Startup aims to clean up the lithium-ion battery supply chain

Li-Cycle was little more than a drawing on the back of a napkin in a Yorkville coffee shop three years ago. Today, the startup founded by University of Toronto alumni is on the verge of an international expansion that its ...

Energy & Green Tech

Researchers discover how to improve safety of nuclear power plants

Researchers at Tomsk Polytechnic University found a method to increase fuel lifetimes by 75%. According to the research team, it will significantly increase safety and reduce the operating cost of nuclear power plants in ...

Machine learning & AI

CycleMatch: a new approach for matching images and text

Researchers at Leiden University and the National University of Defense Technology (NUDT), in China, have recently developed a new approach for image-text matching, called CycleMatch. Their approach, presented in a paper ...

Engineering

Using waste heat to power an environmentally sustainable future

In his most recent published research, appearing in Applied Thermal Engineering, City, University of London's Dr. Martin White explores a novel organic Rankine cycle system, based on a two-phase expansion through numerical ...

Energy & Green Tech

Can sodium-ion batteries replace trusty lithium-ion ones?

Sodium-ion batteries are a potential replacement for lithium batteries, but the anodes—positively charged electrodes—that work well for lithium-ion batteries don't provide the same level of performance for sodium-ion ...

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Cycling

Cycling, also called bicycling or biking, is the use of bicycles for transport, recreation, or for sport. Persons engaged in cycling are cyclists or bicyclists. Apart from ordinary two-wheeled bicycles, cycling also includes riding unicycles, tricycles, quadracycles, and other similar human-powered vehicles (HPVs).

Bicycles were introduced in the 19th century and now number about one billion worldwide. They are the principal means of transportation in many regions.

Cycling is a very efficient and effective mode of transportation optimal for short to moderate distances. Bicycles provide numerous benefits compared to motor vehicles, including exercise, an alternative to the use of fossil fuels, no air or noise pollution, much reduced traffic congestion, easier parking, greater maneuverability, and access to both roads and paths. The advantages are at less financial cost to the user as well as society (negligible damage to roads, and less pavement required). Criticisms and disadvantages of cycling include reduced protection in crashes, particularly with motor vehicles, longer travel time (except in densely populated areas), vulnerability to weather conditions, difficulty in transporting passengers, and the skill and fitness required.

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