Find Out How Loud Your New Neighborhood Will Be Before You Move In

When Brendan Farrell was shopping for a house in Los Angeles, he noticed how real estate sites readily listed a property’s walkability and nearby schools. But the presence of noise—one of the most important quality-of-life factors—remained elusive, and invisible. Farrell realized he could use his skills as an applied mathematician to build a map that could help people “hear” their new homes before they moved in.

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A high-tech solution to China’s smog problem

China’s heavy dependence on fossil fuels has led to it producing almost a third of the world’s CO2 emissions. As well being a contributor to global climate change, burning combustibles like coal has led to the country’s infamous smog problems. This smog contains fine particulate matter (PM2.5) that can cause serious health issues. PM2.5 has become a serious concern for many Chinese citizens, so much so that a market for high-tech personal filtration tech has begun to take off.

The image was taken by Canadian photojournalist Kevin Frayer. It shows a lady using a Mini Lung-Pro, a 190 yuan ($29) gadget that pushes air through a HEPA filter, up a tube, and directly into a face mask. It’s said to filter out PM2.5 while not giving the “breathless” feeling a regular 3M mask does after extended periods of use. In the series’ description, Frayer notes that “China’s government has publicly set 2030 as a deadline to reach the country’s emissions peak, and data suggest the country’s coal consumption is already in decline.”

The photo is from an arresting series titled China’s Coal Dependence A Challenge For Climate, which placed second in the 2016 Sony Photography Awards’ Professional / Contemporary Issues category. (Frayer actually won the Environment category for another series).

The Big Picture is a recurring feature highlighting beautiful images that tell big stories. We explore topics as large as our planet, or as small as a single life, as affected by or seen through the lens of technology.

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