During the blustery cold days and cozy nights this winter, there’s no better time to rediscover the simple pleasures and quiet joys of indoor activities that help you relax and reconnect with family.

Gregory Treverton, a national security expert at RAND Corporation, famously distinguished between two types of problems, puzzles and mysteries. He was describing the modern challenges faced by the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

Security pros tackle tough problems every day, from breach investigations to niche technical issues to strategy and policy development. The key to maintaining and improving these critical ...

For nearly a century, some of the strangest questions in physics have revolved around how quantum objects move, interact and ...

After a week of hearing from readers, I am hopeful that our crossword puzzle problem has a solution. Last week, I wrote about the changes readers had noticed in The Daily Commuter crossword puzzle, ...

In case you've faced some hurdles solving the clue, Unexpected problem, we've got the answer for you. Crossword puzzles offer a fantastic opportunity to engage your mind, enjoy leisure time, and test ...