The Questionable Science Behind the Odd-Looking Football Helmets

The N.F.L. claims Guardian Caps reduce the risk of concussions. The company that makes them says, “It has nothing to do with concussions.” Read more
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Waymo Raises $16 Billion to Fuel Global Ambitions

The self-driving car company, an arm of Google’s parent company, is rapidly expanding its service beyond a handful of cities. Read more
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Brad Karp Says He Regrets Interactions with Epstein

Newly released emails between Mr. Karp, the chairman of Paul Weiss, and Jeffrey Epstein reveal a number of social interactions between them. Read more
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