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 ...

The original version of this story appeared in Quanta Magazine. In 1939, upon arriving late to his statistics course at UC Berkeley, George Dantzig—a first-year graduate student—copied two problems ...

The leading approach to the simplex method, a widely used technique for balancing complex logistical constraints, can’t get any better. In 1939, upon arriving late to his statistics course at the ...

Invest in distressed properties, rehab them for equity, then rent for passive income using the BRRRR method. Ensure total purchase and rehab costs do not exceed 70% of the after repair value (ARV) to ...

The 5-4-3-2-1 grocery shopping method simplifies grocery shopping while still prioritizing whole foods. It can be modified to fit different dietary needs if necessary. Sometimes, going to the grocery ...

“Why you can trust Digital Trends – We have a 20-year history of testing, reviewing, and rating products, services and apps to help you make a sound buying decision. Find out more about how we test ...

The Curly Girl Method is one of the best known sets of practices in curly hair care. While I myself mix and match guidance from everywhere, CGM has garnered a loyal and often meticulous following. A ...

Wim Hof is an athlete and motivational speaker who has proposed that cold exposure combined with periods of hyperventilation and breath-holding can improve health and well-being. The method involves ...

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 ...

The number pi (π) appears in the most unlikely places. It can be found in circles, of course—as well as in pendulums, springs and river bends. This everyday number is linked to transcendental ...

The 5-4-3-2-1 packing method is such an ingenious problem solver and so space saving that it’s a little frustrating to think how long it took us to learn about it. We could have been doing just ...