Python -O won’t magically make every script faster, but in the right workloads it’s a free win—here’s how to test it safely.

Rena Cohen’s first Sunday puzzle gives something to everyone. By Caitlin Lovinger Jump to: Tricky Clues | Today’s Theme SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: ...

Jonathan Kwan (@migrationethics) is the Inclusive Excellence Postdoctoral Fellow in Immigration Ethics with the Markkula Center for Applied Ethics. Views are his own. What term should we use to ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. There’s an art and a ...

This post is part of a mini-series on seven principles for living gratefully: the principles of gifts, abundance, precarious goodness, prioritizing goodness, promoting goodness, nourishing reliance, ...

Reading books has several health benefits. These include strengthening your brain, increasing your ability to empathize, reducing stress, and building your vocabulary. Share on Pinterest ...

Choose this cost-friendly pair of sneakers to keep your feet comfortable all day long. As I've gotten older, I've come to appreciate the benefits of comfortable footwear. Whether I'm heading out for a ...