Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Explore innovative distance measurement methods for DIY projects. Learn about tools like UWB, barometers, and camera-based systems.

So, don't text (remember, emails are evidence that only he has the power to erase); suck it up and call him. Breaking up over ...

Because you’re catching the bullet on the upswing, a 50-yard zero often means you’re close to dead-on again around 160–170 ...

Mathematician Grigori Perelman solved the Poincaré conjecture, and then rejected the $1 million prize that came with it.

Sara Rathner is a NerdWallet travel and credit cards expert. She has appeared on the “Today” show and CNBC’s “Nightly Business Report,” and has been quoted in The New York Times, The Washington Post, ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Mace Dent Johnson Mace Dent ...

The Global Findex Database is the world's only demand-side survey on financial inclusion and a leading source of data on how adults around the world access and use financial services. Since its launch ...

The latest exhumations of Native American students from a cemetery at the former Carlisle Indian Industrial School resulted in the remains of 17 being repatriated to their families and tribes.