In the mid-19th century, Bernhard Riemann conceived of a new way to think about mathematical spaces, providing the foundation ...

How to Do It is Slate’s sex advice column. Have a question? Send it to Jessica and Rich here. It’s anonymous! Dear How to Do It, I’m a 52-year-old woman, and 20 years ago, I ...

An obsession with the numbers can sink your strategy. by Michael Harris and Bill Tayler Tying performance metrics to strategy has become an accepted best practice over the past few decades. Strategy ...

Notable: Seattle is up to 54% to earn the No. 1 seed after beating the Panthers on Sunday, according to The Athletic's playoff predictor. If they beat the Niners on Saturday night, they'll win the No.