Does the human body contain gold? Can eating spinach really make you stronger? Quench your curiosity with the fascinating facts behind every-day mysteries. What Causes Nightmares? Why Does Orange Juice Taste So Bad After You've Brushed Your Teeth? How Are Rainbows Created? Do Ants Sleep? Why do crabs go sideways? What's a fossil? What's a carnivorous plant? Why are some twins identical and other not? Why are butterflies so colourful? Why do sheep need shearing? How do pimples form? How do parrots talk?