The key themes that defined the year behind us will also shape the one ahead. The most-read articles of 2025 tracked a return ...

From above, it’s easy to see the Fibonacci spiral created by a pink stucco home, built into an imposing cliffside in Sedona, Arizona. From below, residents can walk through it, beginning at a central ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Who doesn’t love a good math holiday? Most people know about Pi ...

Well, the hopes and dreams of the bulls have been dashed this week after Bitcoin closed the week out at $94.290, below the key $96,000 weekly support level. In the weeks ahead, we should expect more ...

Smart Stack is one of the Apple Watch’s most handy features, first introduced in watchOS 10 to help users access important information more quickly. Accessible with just a simple swipe down from the ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with random lengths between 0 and 1, what are the chances that no three of ...

I’ve played in 5,391,643 DFS NFL tournaments. Give or take. And I’ve won exactly once. That win was all thanks to a stack. Stacks, for those of you who aren’t DFS nerds like yours truly, are ...