![](http://static.ddmcdn.com/gif/recipes/beach-140626-200x200.jpg)
Now that summer is here, a trip to the beach should bring
familiar smells: seawater, sunscreen and, depending where you live,
sewage. One in ten recreational beaches in the United States isn't fit
for swimming, according to a new report.
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2014-06-nyc-air-map-140626-2501.jpg)
New images from NASA's Aura satellite show that over the last
decade, the amount of the pollutant nitrogen dioxide in the nation's
air has decreased significantly.
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