A ball of glass will bounce higher than a ball made of rubber.
73
Out of all the senses, smell is most closely linked to memory.
146
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44