Global atmospheric concentrations of carbon dioxide, methane, nitrous oxide, and certain manufactured greenhouse gases have all risen substantially in recent years. • Before the industrial era began around 1780, carbon dioxide concentrations measured approximately 270–290 ppm. Concentrations have risen steadily since then, reaching 387 ppm in 2009—a 38 percent increase. Almost all of this increase […]
NEW YORK, NY, May 26, 2010 — Nitrous oxide, or N2O, is a greenhouse gas considered by experts to be 300 times more powerful in its atmospheric warming effect than carbon dioxide. By far the greatest recorded sources of N2O emissions are from agricultural activities and fossil fuel combustion. But sewage breakdown by some wastewater […]
Editing by Philippa Fletcher OSLO (Reuters) – Thawing permafrost can release nitrous oxide, also known as laughing gas, a contributor to climate change that has been largely overlooked in the Arctic, a study showed on Sunday. The report in the journal Nature Geoscience indicated that emissions of the gas surged under certain conditions from melting […]
EVEN breathing can be dangerous these days. Air pollution is knocking up to nine years off the lives of people who live in pollution hotspots or have a respiratory illness. So says a report by the UK House of Commons’ Environmental Audit Committee. Tiny particles of sulphate, carbon and dust are the most damaging […]
ScienceDaily (Mar. 26, 2010) — The economic growth across much of Asia comes with a troubling side effect: pollutants from the region are being wafted up to the stratosphere during monsoon season. The new finding, in a study led by scientists at the National Center for Atmospheric Research, provides additional evidence of the global nature […]
ScienceDaily (Mar. 12, 2010) — The increased frequency and intensity of oxygen-deprived “dead zones” along the world’s coasts can negatively impact environmental conditions in far more than just local waters. In the March 12 edition of the journal Science, University of Maryland Center for Environmental Science oceanographer Dr. Lou Codispoti explains that the increased amount […]
GENEVA (Reuters) – Gases blamed for global warming reached record levels in the atmosphere last year, the United Nations weather agency said on Tuesday. Concentrations of carbon dioxide (CO2) and nitrous oxide (N2O) touched new highs after more steady rises in 2007, and methane had its largest annual increase in a decade, the World Meteorological […]
