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

Craving a larger home that could accommodate their blended family, a couple toured a popular condo community in Boca Raton, Fla., in search of a three-bedroom. By Julia Echikson Sanford Solny was ...

Luke Combs (twice!) and Lainey WIlson are among the first singers announced as performers at the 2025 CMA Awards. The nine ...