LONDON, Aug. 5 (UPI) -- Serena and Venus Williams of the United States won the Olympic gold medal Sunday in women's doubles.
It was their third gold medal in the last four Olympics.
The silver medal went to Lucie Hradecka and Andrea Hlavackov of the Czech Republic, who lost to the Williams sisters in the final 6-4, 6-4.
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LAUSANNE, Switzerland, June 18 (UPI) --A new computer algorithm that can give humans the ability to map their environments with sound could lead to an app to aid blind people, Swiss researchers say.