The family of Sunil Tripathi, the Indian-American student whose body was recovered from the Providence river in the US state of Rhode Island, has said that the 22-year-old had shown signs of depression prior to his disappearance.
A NASA spacecraft has detected deposits of glass on Mars.
One of the first things Meera Chandrasekhar noticed at Brown University, where she was enrolled in the doctorate program in physics, was that there were just three women and some two dozen men.
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