Optical illusions are produced by the refraction (bending) of light. The change in direction of light as it passes from one medium to another can cause objects to appear distorted or misplaced, ...

Test your food knowledge! Solve our visual riddle featuring a brown shape and 'IES' to guess a popular, fudgy dessert. Can you get it right in 7 seconds?

Discover what your favourite subject says about your personality. Take our fun quiz and explore your strengths and career ...