A contractor designed the Squatty Potty to help his mother get closer to the squatting position on the john. Courtesy of Squatty Potty hide caption

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From left: Frank Wild, Ernest Shackleton, Dr. Eric Marshall and Jameson Adams head back to base camp after getting within 97 miles of the South Pole — closer than anyone had gotten before them — in January 1909. /Getty Images hide caption

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Fire department personnel, police officers and paramedics at the scene of a fatal collision on Highway 401 in Mississauga, Ontario, in July 2011. Stacey Newman/iStockphoto.com hide caption

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A man stands in a fountain in Washington Square Park on July 18, in New York City. Temperatures were expected in the upper 90's during another heat wave in the city. Mario Tama/Getty Images hide caption

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Two men from northwestern Missouri became ill after tick bites infected them with a previously unknown virus. iStockphoto.com hide caption

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A Beechcraft airplane sprays insecticide over Dallas early Monday morning to curb the spread of West Nile virus. LM Otero/AP hide caption

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Research suggests basic forms of learning are possible while snoozing. iStockphoto.com hide caption

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Though scientists have identified sleepwalking triggers, the condition is still a bit of a mystery. Victoria Alexandrova/iStockphoto.com hide caption

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Ashley Beecher, 29, and her daughters Annie (on lap) and Charlie. After feeding Annie, Beecher donates her extra supply to the human milk bank at Texas Children's Hospital. KUHF hide caption

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