They come from factory stacks, car exhaust pipes and cruise liner engines. They are tiny particles and they are all around us. When we breathe in air, these particles settle in the small vessels of our lungs, and they make ...
Environment
May 24, 2023
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Rescuers on Monday evacuated about 1,000 people trapped by seawater 3.6 meters (12 feet) deep along western Myanmar's coast after a powerful cyclone injured hundreds and cut off communications. Six deaths were reported, but ...
Environment
May 14, 2023
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29
The Emirati oil chief leading this year's UN climate talks said Wednesday the world must get "serious" about new emission-capturing technology, rather than focussing only on replacing fossil fuels with renewable energy.
Environment
May 10, 2023
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In a new study published in the journal Proceedings of the Royal Society B, researchers have studied the efficiency of migratory bats—a species that weighs about eight grams and is found in almost all of Europe. Efficiency, ...
Plants & Animals
May 9, 2023
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188
Germany called Tuesday for governments around the world to work on setting an ambitious target for renewable energy that would "ring in the end of the fossil fuel age" and help prevent dangerous global warming.
Environment
May 2, 2023
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Environmental campaigners urged climate envoys from dozens of nations gathering Tuesday in Berlin to discuss a global deadline for phasing out fossil fuels and ways of increasing aid to poor countries hit by global warming.
Environment
May 2, 2023
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Using hydrophones to eavesdrop on a reef off the coast of Goa, India, researchers have helped advance a new low-cost way to monitor changes in the world's murky marine environments.
Ecology
Apr 27, 2023
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Storm Arwen, described by the UK's Met Office as "one of the most powerful and damaging winter storms of the last decade," hit the east coast of Scotland and northern England in late November 2021. Wind gusts of over 90 mph ...
Environment
Apr 24, 2023
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Temperatures are rising in Japan and summer is coming fast.
Environment
Apr 11, 2023
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On March 23, sky observers marveled at a gorgeous display of northern and southern lights. It was reminder that when our sun gets active, it can spark a phenomenon called "space weather." Aurorae are among the most benign ...
Planetary Sciences
Apr 3, 2023
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Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. At the end of 2008, worldwide nameplate capacity of wind-powered generators was 121.2 gigawatts (GW). Wind power produces about 1.5% of worldwide electricity use, and is growing rapidly, having doubled in the three years between 2005 and 2008. Several countries have achieved relatively high levels of wind power penetration, such as 19% of stationary electricity production in Denmark, 11% in Spain and Portugal, and 7% in Germany and the Republic of Ireland in 2008. As of May 2009, eighty countries around the world are using wind power on a commercial basis.
Large-scale wind farms are connected to the electric power transmission network. Smaller turbines are used to provide electricity to isolated locations. Utility companies increasingly buy back surplus electricity produced by small domestic turbines. Wind energy as a power source is attractive as an alternative to fossil fuels, because it is plentiful, renewable, widely distributed, clean, and produces no greenhouse gas emissions; however, the construction of wind farms (as with other forms of power generation) is not universally welcomed due to their visual impact and other effects on the environment.
Wind power is non-dispatchable, meaning that for economic operation all of the available output must be taken when it is available, and other resources, such as hydropower, and standard load management techniques must be used to match supply with demand. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand. Where wind is to be used for a moderate fraction of demand, additional costs for compensation of intermittency are considered to be modest.
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