Snapchat has long had the ability to help solve math problems, but now the feature is front and center. “It’s all about making the camera feel more magical,” said Eva Zhan of Snap. Snapchat Just open ...

For decades, mathematicians tried to come up with the optimal sofa shape to move around a corner. Post-doctoral student Jineon Baek posted a 100-page proof that claims to solve the problem. In a scene ...