Busy times for Air Quality Consultants – The latest air quality news
Carbon dioxide hits a critical 400ppm in April
April 2014 was predicted to see carbon dioxide readings at the Mauna Loa Observatory in Hawaii reach 400 ppm for the first time in human history, a symbolic number for global warming.
US air quality report reveals unhealthy levels of pollution
A new American Lung Association report highlights where the US stands on air pollution in 2014, revealing how a worrying 150 million people live with unhealthy air pollution levels. And it appears the situation has become worse since their last report in 2013.
The 2014 State of the Air report, out Wednesday 30th April, is a mix of good and bad news. While there have been some improvements in air quality compared to previous decades, a recent hike in ozone readings means 147.6 million US citizens suffer unhealthy air quality, 16 million more than in 2013.
The study looked at average year-round, 24/7 particulate pollution levels, examining the typical mix of small solid and liquid particles emitted from coal-fired energy plants and vehicle exhaust fumes. It also measured ozone and looked at smog. Fine particulates and ozone pollution both result in a rise in the risk of nasties like heart disease, lung cancer and asthma, making it a worrying trend.
Bacteria reveal a useful appetite for natural gases
At the same time, Science Daily reports about bacteria that enjoy eating natural and human-made gas leaks, preventing methane and propane being released into the air where they can promote global warming. The new research comes from the highly-respected school of Environmental Sciences at the University of East Anglia, and shows that one particular bacterium can mop up natural gas surprisingly efficiently.
Published today in the journal Nature, the research reveals how Methylocella silvestris, which lives in soil as well as many other natural environments, loves to grow on the methane and propane found in natural gas.
Why’s it exciting? Because we originally thought different groups of bacteria metabolized methane and other gaseous alkanes. Methylocella silvestris’ new-found skills could help mitigate the effects of these greenhouse gases that are released to the atmosphere from natural seepage and human-led activities like oil leaks and fracking.
USA upholds Cross-State Air Pollution Rule
Back to the USA where there’s also some good news. In Washington DC, on 29th April, the US Supreme Court upheld the EPA’s Cross-State Air Pollution Rule. It’s a clean air standard requiring 28 states across the nation’s East, Midwest and South to cut pollution from coal-fired power plants, which have a tendency to blow over state borders and cause problems downwind.
The highly influential American Lung Association commented that:
“Millions of Americans will breathe easier, thanks to the decision today by the U.S. Supreme Court that will finally curtail second-hand smog – ozone smog and particle pollution blown across state borders far from their sources, threatening lives and health.”
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