Researchers: 96% of ex-NFL players had brain disease

Researchers say 96% of former NFL players who donated their brains to science after death tested positive for a brain disease linked to concussions. CNN’s Sanjay Gupta explains.

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Lisa’s Pet Of The Week

Lisa’s Pet Of The Week

Derek is a very good boy. His calm and gentle nature makes him the perfect addition to a loving home looking for a sweet and well-mannered companion