Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

The once-random phrase turned global inside joke became this year’s Word of the Year, proving how Gen Z and Gen Alpha ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: While most estimates place the ...