In the coming weeks, trials and test runs begin for the 2016 Olympics in Rio de Janeiro. An investigation by the Associated Press has revealed that athletes will be swimming and boating in waters dangerously contaminated by sewage, viruses and…
By PBS NewsHour
Science correspondent Miles O'Brien plunged into a muck of that which rhymes with "it" to investigate our ailing sewage system. Here's his story of what happened underground. Don't miss his full report on tonight's NewsHour.
Watch the video for some highlights of the year from our fearless science correspondent.
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