Tessellations aren’t just eye-catching patterns—they can be used to crack complex mathematical problems. By repeatedly reflecting shapes to tile a surface, researchers uncovered a method that links ...

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 ...

Vikki Velasquez is a researcher and writer who has managed, coordinated, and directed various community and nonprofit organizations. She has conducted in-depth research on social and economic issues ...

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 ...

In this episode of the AutoGuide Show, host Greg Migliore goes one-on-one with Arie Groeneveld, chief program engineer for the Ford Mustang Dark Horse SC. Why wasn’t this a Shelby GT500? We ask the ...