Every great solution begins with a curious mind. Put on your detective hat and dive into “Know Problem” this November with ...

By Richard Ohanian Sometime in late 1780s, a math teacher in an elementary school in Brunswick, Germany, asked his students ...

For centuries, the greatest minds — from Euclid to Euler — have wrestled with problems that seem simple to state but ...

Sound smarter without jargon: mirror first, ask cleaner questions, set context and time horizons, and end with the smallest ...

The hour, minute and second hands of this clock are all the same length and move smoothly in a circle. The two hands on the ...

Deep inside caves, water dripping from the ceiling creates one of nature's most iconic formations: stalagmites. These pillars ...

Earlier this month, former Minneapolis TV journalist Rick Kupchella amplified that idea in a widely discussed hourlong ...