News tagged with cycling
Gourmet butterflies speed north: study
A new study led by scientists in the Department of Biology at the University of York has shown how a butterfly has changed its diet, and consequently has sped northwards in response to climate change. Their study is published ...
May 24, 2012 |
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Toxic mercury, accumulating in the Arctic, springs from a hidden source
(Phys.org) -- Environmental scientists at Harvard have discovered that the Arctic accumulation of mercury, a toxic element, is caused by both atmospheric forces and the flow of circumpolar rivers that carry ...
Space & Earth / Earth Sciences
May 21, 2012 |
3.7 / 5 (3) |
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Pollution teams with thunderclouds to warm atmosphere
Pollution is warming the atmosphere through summer thunderstorm clouds, according to a computational study published May 10 in Geophysical Research Letters. How much the warming effect of these clouds offsets the cooling that o ...
Space & Earth / Earth Sciences
May 18, 2012 |
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New nanostructure for batteries keeps going and going
(Phys.org) -- For more than a decade, scientists have tried to improve lithium-based batteries by replacing the graphite in one terminal with silicon, which can store 10 times more charge. But after just a ...
May 11, 2012 |
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Study ups plant CO2 intake estimates
Plants may be able to limit the impact of our CO2 emissions even more than we previously thought, an innovative new experiment suggests.
May 21, 2012 |
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New study provides baseline measurements of carbon in Arctic Ocean
Scientists from the Woods Hole Oceanographic Institution (WHOI) have conducted a new study to measure levels of carbon at various depths in the Arctic Ocean. The study, recently published in the journal Biogeosciences, provid ...
Space & Earth / Earth Sciences
May 21, 2012 |
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Earth's water cycle intensifying with atmospheric warming
A clear change in salinity has been detected in the world's oceans, signalling shifts and an acceleration in the global rainfall and evaporation cycle.
Space & Earth / Earth Sciences
May 21, 2012 |
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Water supersaturation in the Martian atmosphere discovered
(PhysOrg.com) -- New analysis of data sent back by the SPICAM spectrometer on board ESA's Mars Express spacecraft has revealed for the first time that the planet's atmosphere is supersaturated with water vapour. ...
Space & Earth / Space Exploration
Sep 29, 2011 |
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Split-cycle engine now more efficient than traditional combustion engine (w/ Video)
(PhysOrg.com) -- Split-cycle engines have been around for some time but until now have never matched the fuel efficiency of traditional internal combustion engines. That is about to change, with the latest ...
Jan 24, 2011 |
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Revolutionary conducting polymer enables silicon use as next generation of lithium-ion battery anodes
Lithium-ion batteries are everywhere, in smart phones, laptops, an array of other consumer electronics, and the newest electric cars. Good as they are, they could be much better, especially when it comes to ...
Nanotechnology / Nanomaterials
Sep 23, 2011 |
4.9 / 5 (10) |
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Clear link between solar activity and winter weather revealed
Scientists have demonstrated a clear link between the 11-year sun cycle and winter weather over the northern hemisphere for the first time.
Space & Earth / Earth Sciences
Oct 10, 2011 |
4.5 / 5 (18) |
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What's down with the Sun? Major drop in solar activity predicted
(PhysOrg.com) -- A missing jet stream, fading spots, and slower activity near the poles say that our Sun is heading for a rest period even as it is acting up for the first time in years, according to scientists ...
Space & Earth / Space Exploration
Jun 14, 2011 |
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Activated graphene makes superior supercapacitors for energy storage
(PhysOrg.com) -- Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have helped to uncover the nanoscale structure of a novel form of carbon, contributing to an explanation of why ...
Nanotechnology / Nanomaterials
May 12, 2011 |
5 / 5 (14) |
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Diamonds show depth extent of Earth's carbon cycle
Scientists have speculated for some time that the Earth's carbon cycle extends deep into the planet's interior, but until now there has been no direct evidence. The mantle–Earth's thickest layer –is ...
Space & Earth / Earth Sciences
Sep 15, 2011 |
4.5 / 5 (6) |
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Microbial life on Mars: Could saltwater make it possible?
(PhysOrg.com) -- How common are droplets of saltwater on Mars? Could microbial life survive and reproduce in them? A new million-dollar NASA project led by the University of Michigan aims to answer those questions.
Space & Earth / Space Exploration
Aug 17, 2011 |
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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.
For more information about Cycling, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
