Why Woody Allen cast the stand-up comedian, highly popular but notoriously divisive 20 years ago, in his new movie. He plays a blue-collar Italian-American dad.

Mind New colour seen for the first time by tricking the eyes A device has enabled people to see a new a shade of blue-green, which they say is more intense than any experienced before By Carissa Wong ...

They live in the deep blue sea, but whales and dolphins can't actually see the colour blue. German and Swedish biologists have discovered they lack the visual pigment needed to see blue light ...