More than a century ago, mathematicians accepted a rule so intuitive it seemed harmless. But once formalized, it led to something deeply unsettling: a solid sphere could be split apart and reassembled ...

Modern technologies increasingly rely on light sources that can be reconfigured on demand. Think of microlasers that can quickly switch between different operating states—much like a car shifting ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. The Trump administration is planning to use artificial ...

When you watch tennis, the scoring feels straightforward. Points build games. Games build sets. Sets decide the match. Yet a new analysis suggests that this structure can lead to an unexpected result; ...

Insulation experts suggest that one reason our living spaces feel colder than they should is due to poor furniture placement. Apparently, all we need to do is follow a simple 30cm rule. At this point, ...

The "3-6-9 rule" suggests that it is important to pay attention to the calendar when determining what to do with a relationship. Source: Leeloo The First / Pexels Someone I was dating once told me ...

You know the feeling: The paint is dry, the furniture looks good, but somehow the whole thing still feels unfinished. Designers have a trick for that, and it’s surprisingly easy. Called the “Sandwich ...

I find the rule too restrictive. I'd rather adjust my withdrawal rate from year to year based on market conditions and my personal spending needs. As someone who writes about Social Security regularly ...

Emily Long is a freelance writer based in Salt Lake City. After graduating from Duke University, she spent several years reporting on the federal workforce for Government Executive, a publication of ...