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Brain Disease Is Pervasive in N.F.L., New Estimate Suggests

Using statistical techniques, a new study has arrived at a harrowing estimate: Three of four retired pro football players most likely had C.T.E. at death.

© Owen C. Shaw/Getty Images

Junior Seau, No. 55, during a San Diego Chargers game in 2002 against the San Francisco 49ers. His family donated his brain to research after his death in 2012, and he was later diagnosed with C.T.E.
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Higher, Faster, Gnarlier: Have Roller Coasters Become Too Extreme?

A coaster dares riders to be daring, with steep drops, high speeds and improbably tight curves. But safety has become a concern again after a man was thrown from his seat and died in Georgia.

© Elijah Nouvelage/Getty Images

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