Tessellations aren’t just eye-catching patterns—they can be used to crack complex mathematical problems. By repeatedly ...

Buyout firms have struggled to sell companies they own and have instead found a workaround to get cash back to clients: Selling the companies to themselves. By Maureen Farrell Maureen Farrell covers ...

This story is part of Planet or Plastic?—our multiyear effort to raise awareness about the global plastic waste crisis. Learn what you can do to reduce your own single-use plastics, and take your ...