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Acidity in atmosphere minimized to preindustrial levels
September 26, 2016 10:30 AM - University of Copenhagen via ScienceDaily

New research shows that human pollution of the atmosphere with acid is now almost back to the level that it was before the pollution started with industrialization in the 1930s. The results come from studies of the Greenland ice sheet and are published in the scientific journal, Environmental Science and Technology.

The Greenland ice sheet is a unique archive of the climate and atmospheric composition far back in time. The ice sheet is made up of snow that falls and never melts, but rather remains year after year and is gradually compressed into ice. By drilling ice cores down through the kilometre-thick ice sheet, the researchers can analyse every single annual layer, which can tell us about past climate change and concentration of greenhouse gases and pollutants in the atmosphere.

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Selecting the right house plant could improve indoor air
August 24, 2016 07:30 AM - American Chemical Society via EurekAlert!

Indoor air pollution is an important environmental threat to human health, leading to symptoms of "sick building syndrome." But researchers report that surrounding oneself with certain house plants could combat the potentially harmful effects of volatile organic compounds (VOCs), a main category of these pollutants. Interestingly, they found that certain plants are better at removing particular harmful compounds from the air, suggesting that, with the right plant, indoor air could become cleaner and safer. 

The researchers are presenting their work today at the 252nd National Meeting & Exposition of the American Chemical Society (ACS). ACS, the world's largest scientific society, is holding the meeting here through Thursday. It features more than 9,000 presentations on a wide range of science topics. A brand-new animation on the research is available at http://bit.ly/ACSindoorairpollution.

"Buildings, whether new or old, can have high levels of VOCs in them, sometimes so high that you can smell them," says Vadoud Niri, Ph.D., leader of the study. 

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SPOTLIGHT

You Could Be Eating Endangered Fish Without Even Realizing It

Julie Rodriguez, Care2

When you go out for sushi or visit a seafood restaurant, how sure can you be that you’re really getting what you’ve ordered? Last week, Oceana released some shocking findings: Around the world, an average of one in five samples of seafood is mislabeled.

The report examined 25,000 samples worldwide and reviewed more than 200 published studies from 55 different countries. Every continent was represented apart from Antarctica. The mislabeling was present in every part of the seafood supply chain, including retail, wholesale, distribution, import/export, packaging, processing, and landing.

That’s bad news for many reasons – mislabeling makes dining dangerous for consumers (not all of these species are considered suitable for human consumption), and difficult for people who are trying to avoid mercury exposure or who simply want to dine more sustainably. In most cases, cheap fish were being passed off as more expensive varieties.

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