Also known as ‘weed day’, 420 is the unofficial holiday of marijuana – almost a St Patrick’s Day for stoners. Every year ...

A baffling mindtwister requires outside-of-the-box thinking and keen pattern-identifying skills to get to the bottom of it.

Aimee Picchi is the associate managing editor for CBS MoneyWatch, where she covers business and personal finance. She previously worked at Bloomberg News and has written for national news outlets ...

(Also read: You're a brain teaser champ if you can crack this tricky maths puzzle in under 15 seconds) If you’re someone who enjoys solving maths puzzles and teasing your brain, then there’s a fresh ...

John von Neumann — the man who created game theory, advanced many branches of mathematics and physics, and did more than anyone to design the modern computer — was someone who attracted a certain ...

Judging by a teachers' union magazine, the keys to education are not math, grammar or history but climate-change activism ...

Plus, there are riddles of all types, including hard riddles for kids, math riddles and plain old funny riddles. A riddle ...

(Also read: Only those with lightning-fast logic can crack this mind-bending maths puzzle in 15 seconds) If you're someone who enjoys solving brain teasers, we’ve got a new challenge for you. This ...