I would run right up to the wall and touch it, even in the dark — I needed the distance for my run — and often I could run all the way up to the wall and not one of them would say a word.
Rogers found that a chick's lateralisation depends on whether it is exposed to light before hatching from its egg—if it is kept in the dark during this period, neither hemisphere becomes dominant.
Nowadays the rainbow is used by many popular movements for peace and the environment, representing the possibility of a better world in the Mure and promising sunshine after the rain.
Yet there is a dark side to this picture: despite our progress, half of the world's population still suffers, with water services inferior to those available to the ancient Greeks and Romans.
Turn your reading light off when taking off or landing at night. Your eyes will be more adjusted to the dark if you have to leave the plane in a hurry.