In some cultures, dimples are seen as a sign of beauty or even good luck. But what causes dimples, and why do some people have them while others don't? Dimples are small, natural indentations in the ...

The stiffness and curvature of ageing fruit can explain how its skin wrinkles 1. Natural 3D structures that grow, shrink or undergo other changes can exhibit a range of wrinkled patterns on their ...