Ozone hole smaller in 2009 than 2008: WMO
The World Meteorological Organisation said Wednesday that the ozone hole is expected to be smaller in 2009 than a year ago.
The World Meteorological Organisation said Wednesday that the ozone hole is expected to be smaller in 2009 than a year ago.
Earth Sciences
Sep 16, 2009
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Every holiday season, Americans buy nearly 30 million live Christmas trees. Many families enjoy not only having a live tree inside their homes but also smelling the fresh fragrance it creates. That smell comes from chemicals ...
Environment
Dec 23, 2023
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Chlorofluorocarbons (CFCs) are to blame for global warming since the 1970s and not carbon dioxide, according to new research from the University of Waterloo published in the International Journal of Modern Physics B this ...
Earth Sciences
May 30, 2013
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Imagine reading by the light of an exploded star, brighter than a full moon—it might be fun to think about, but this scene is the prelude to a disaster when the radiation devastates life as we know it. Killer cosmic rays ...
Astronomy
Aug 18, 2020
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6859
When the Hunga Tonga-Hunga Ha'apai volcano erupted on January 15, 2022 in the South Pacific, it produced a shock wave felt around the world and triggered tsunamis in Tonga, Fiji, New Zealand, Japan, Chile, Peru and the United ...
Earth Sciences
Nov 20, 2023
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(PhysOrg.com) -- Man-made air pollution from North America causes Europe to lose 1.2 million tonnes of wheat a year, a new study has found.
Other
Jan 30, 2012
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(PhysOrg.com) -- Scientists have found that acidic ozone water can deactivate H1N1 viruses very effectively, offering a promising disinfectant for the millions of people trying to avoid the disease. Acidic ozone water (AOW) ...
Scientists at MIT and elsewhere have identified the "first fingerprints of healing" of the Antarctic ozone layer, published today in the journal Science.
Earth Sciences
Jun 30, 2016
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5291
Climate modeling based upon Earth's current greenhouse gas emissions trajectory predicts a worst-case scenario of 4.3°C warming of the planet by 2100 if sufficient measures are not implemented. While the Paris Climate Agreement ...
You've probably seen the UV index in the day's weather forecast, and you know it tells you when you need to cover up and wear sunscreen.
Environment
Dec 21, 2021
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32
Ozone or trioxygen (O3) is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic O2. Ground-level ozone is an air pollutant with harmful effects on the respiratory systems of animals. The ozone layer in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth's surface. It is present in low concentrations throughout the Earth's atmosphere. It has many industrial and consumer applications.
Ozone, the first allotrope of a chemical element to be recognized by science, was proposed as a distinct chemical compound by Christian Friedrich Schönbein in 1840, who named it after the Greek verb ozein (ὄζειν, "to smell"), from the peculiar odor in lightning storms. The formula for ozone, O3, was not determined until 1865 by Jacques-Louis Soret and confirmed by Schönbein in 1867.
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