Girl Planting seeds

Researchers tap uncommon and valuable pristine air to reveal pollution's impact

Five years ago, in March 2014, researchers spent three hours packed aboard a steamy Gulfstream-1 research aircraft as it zig-zagged between pristine air over the Amazon rainforest and polluted air nearby. It was like a trip back (and forth) through time, as scientists weaved between the two vastly different settings, snagging air samples characteristic of today's industrial environment as well as samples of unpolluted air, like that before the industrial age.  An international team of scientists led by Pacific Northwest National Laboratory's Manish Shrivastava has analyzed some of the data and found that human-caused pollution spurs the production of climate-changing particles known as secondary organic aerosols much more than previously thought. The team published its results in Nature Communications.  Read more...



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