Guanabara Bay: the sailing venue for the 2016 Olympic Games | Photo: Rodrigo Moraes/Reuters

The British Sailing Team is concerned about water quality in Guanabara Bay, the sailing venue for the 2016 Olympic Games.

The waters of Rio de Janeiro are heavily polluted. Despite the promises from the local authorities, the amount of untreated waste flowing into the Guanabara Bay will not be cut by 80 percent, as initially announced.

"The sailors are on various supplements to mitigate against it, but we can't do anything about the water quality," Stephen Park, British Sailing Team's manager, told Reuters.

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Wind: blowing secrets ever since | Photo: James Loesch/Creative Commons

The wind has many secrets. The wind hides multiple faces. The wind is invisible yet powerful. Discover and learn a few surprising windy facts.

Wind is simply the flow or movement of air from high to low pressures. You can touch it, you can feel it, but you will never be able to store it in a box or own it.

Winston Churchill once said, "Kites rise highest against the wind - not with it." Interestingly, people often consider wind to be an obstacle, and never quite understand that you can you adjust and adapt to get the most out of it from another perspective.

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Ice windsurfing: colder than cold | Photo: WISSA

The wind chill temperature is the combination of the cooling effect of wind and temperature. Windsurfers, kiteboarders, and wave riders, in general, have certainly felt how wind reduces comfort when they're out in the water on a cold and windy winter day. So, how does cold air feels on human skin?

One of the most stable variables in our body's equation is temperature. The average human body temperature ranges between 98.2° and 98.6 °F (36.8° and 37°C). Wind can easily change that.

According to NOAA's National Weather Service, when you're sailing and wind increases, "the body is cooled at a faster rate, driving down both the skin temperature and eventually the internal body temperature."

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