Roses are red, violets are blue but according to the latest understanding these colors are really an illusion. One that you create yourself.
Horizon reveals a surprising truth about how we all see the world. You may think a rose is red, the sky is blue and the grass is green, but it now seems that the colors you see may not always be the same as the colors I see. Your age, sex and even mood can affect how you experience colors.
Scientists have unlocked the hidden power that colors can have over your life - how red can make you a winner, how blue makes time speed up, and more.