The story of Kryptos and the cryptanalyst who spent decades trying to solve the CIA sculpture greatest mystery.

If you are a math teacher in 2025, you have likely had The Conversation in the faculty lounge. It usually goes something like this:"I assigned a worksheet on qu ...

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 ...

If you're preparing for future emergencies, having a clean source of water is crucial. Distilled water should be part of any disaster preparedness plan. It ensures you have clean drinking water during ...

A new theory argues the famous Voynich Manuscript, often referred to as “the most mysterious book in the world,” may have ...

Can magnet recycling and rare-earth-free motors reduce global dependence on strategic minerals? Part 4 explores breakthroughs ...

Getting good sleep is critical. A 2018 study found that people who sleep for five to six hours are 19 percent less productive than people who regularly sleep for seven to eight hours per night. People ...

Terms apply to American Express benefits and offers. Visit americanexpress.com to learn more. Any time you tap, swipe or dip a credit or debit card at checkout or enter your card number online, you ...

It's a new year and many people are making goals to improve their health in 2026. While quality sleep may sound like a simple way to improve your health, between 50 million and 70 million Americans ...

Preparing for REET Mains exam requires a deeper and more focused approach compared to Prelims. As the Rajasthan Staff ...

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 ...