dw5hpvvm-1414408113Let’s start with a quiz…

  1. How many senses do you have?
  2. Which of the following are magnetic: a tomato, you, paperclips?
  3. What are the primary colours of pigments and paints?
  4. What region of the tongue is responsible for sensing bitter tastes?
  5. What are the states of matter?

If you answered five; paperclips; red, yellow and blue; the back of the tongue; and gas, liquid and solid, then you would have got full marks in any school exam. But you would have been wrong. At Real Clear Science