Tessellations aren’t just eye-catching patterns—they can be used to crack complex mathematical problems. By repeatedly ...

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 ...

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 ...

Part of Pine Island Glacier collapsed several years ago, forming an unstable inlet where no ship had sailed. Until now. By Raymond Zhong Construction can continue on an $11.2 billion project off the ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor tax expert. She ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Charlene Rhinehart is a CPA , CFE, chair of ...

If you want children but are having fertility issues, a surrogate pregnancy may be an option to consider and discuss. If you want to have a child but can’t have one biologically, you may consider ...

Followers want comfort, stability, and solutions from their leaders. But that’s babysitting. Real leaders ask hard questions and knock people out of their comfort zones. Then they manage the resulting ...