• Why do you have two eyes?
  Two eyes help you to judge how far away something is. Each eye gets a ...

• What are eyelashes for?
  Your eyelashes help to protect your eyes by stopping dust and dirt ...

• What keeps the eye in place?
  The eyeball is held firmly in place by six muscles attached to the ...

• How big is your eyeball?
  An adult eyeball is about the size of a golf ball, but most of the ...

• Why does the pupil change size?
  The pupil becomes smaller in bright light to stop too much light from ...

• What is the blind spot?
  The blind spot is a spot on the retina where the optic nerve leaves ...

• What is the brain made of?
  The brain consists of water and billions of nerve cells and nerve ...

• Why do you remember some things and forget others?
  On the whole you remember things that are important to you in some ...

• Why are some people more artistic than others?
  One side of the brain deals more with music and artistic skills, and ...

• What does the skull do?
  The skull is a hard covering of bone that protects the brain like a ...