A new proof reveals the answer to the decades-old “moving sofa” problem. It highlights how even the simplest optimization problems can have counterintuitive answers.

Violent crime is up. Street life is often lacking. Can a $3.7 billion convention center expansion transform the fortunes of the city’s central business district?

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources ...

IKEA offers a few iconic furniture lines, like the BILLY (of the famed BILLY bookshelf) and the HEMNES. One other line that ...