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Acid Rain and Ozone Depletion May Have Triggered Mass Extinction 250 Million Years Ago
2013-11-23 18:02:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: Acid rain and ozone depletion may have caused the Earth's most severe known mass extinction, a new study published in the journal Geology suggests. Some 250 million years ago, at the end of the Permian period, more than 90 percent of marine species and over 70 percent of terrestrial species died off, setting the scene for the day of the dinosaur. The die-off was so extreme that, according to fossil records left behind, ecological diversity was not fully restored for another several million...
Climate, Ozone Threatened by Increasing Emissions of Laughing Gas, UNEP Warns
2013-11-21 21:03:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: Emissions of nitrous oxide (N2O), also known as laughing gas, could double by 2050, threatening gains made in healing the ozone layer, the United Nations Environment Program warns in a new report. Agriculture is by far the number one contributor to N2O emissions, accounting for some two-thirds, with other major sources including fossil fuel combustion, biomass burning and wastewater. "Although not as prevalent in the atmosphere as CO2 in terms of mass, N2O ... is far from a laughing matter...
Tags: gas
increasing
climate
laughing
PyroGenesis' Novel Steam Plasma Arc SPARC' Destruction System Exceeds 99.9999% Commercial Destruction Of Ozone Depleting Substances
2013-11-18 04:19:19| pollutiononline News Articles
PyroGenesis Canada Inc.("PyroGenesis" or the "Company") (TSX-V: PYR), an environmental solutions company that designs, develops and manufactures plasma waste-to-energy systems and plasma torch products, today announced that its state-of-the-art, Steam Plasma Arc (SPARC) Destruction System for Ozone Depleting Substances (ODS) achieved a 10x greater Destruction Efficiency as compared to the current requirement of 99.9999%
Tags: system
commercial
substances
plasma
Ozone Hole History Offers Climate Lesson
2013-11-10 19:01:00| Climate Ark Climate Change & Global Warming Newsfeed
Scientific American: In the 1970s, chemists Mario Molina and Sherwood Roland found that mundane household items posed a serious worldwide threat. The two chemists discovered that chlorofluorocarbons, or CFCs, from air conditioners and canisters of hair spray could destroy the ozone layer. That insight got them a Nobel Prize. By the 1980s, folks like then Secretary of State George Shultz woke up to the threat, despite a campaign of denial from scientific doubters. He convinced President Reagan that the danger was real...
Tags: history
offers
hole
climate
Ozone pact helped cool the planet
2013-11-10 16:29:00| Climate Ark Climate Change & Global Warming Newsfeed
Agence France-Presse: A slowdown in global warming that climate sceptics cite in favour of their cause was partly induced by one of the world's most successful environment treaties, a study said on Sunday. The UN's Montreal Protocol, designed to phase out industrial gases that destroy Earth's protective ozone layer, coincidentally applied a small brake to the planet's warming, it said. Without this treaty, Earth's surface temperature would be roughly 0.1 degrees Celsius (0.2 degrees Fahrenheit) higher today, according...
Tags: cool
helped
planet
ozone
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