Rocky Point High School math teacher Jay Rand likes to challenge his students with a classic head-scratcher on the first day ...

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

That's the end of this live text now, thanks for joining us today. A reminder of the FA Cup semi-final ties: Nottingham Forest v Manchester City, Crystal Palace v Aston Villa. Both at Wembley on the ...

Since the launch of the Crossword in 1942, The Times has captivated solvers by providing engaging word and logic games. In 2014, we introduced the Mini Crossword — followed by Spelling Bee, Letter ...

Make this Thanksgiving memorable with creative, kid-approved crafts you can set up in minutes and enjoy all season long.