#82 - Why Do Fruit-Flavoured Candies Taste Like Fruit Even Though They Contain None?

Why does the sound of fingernails scraping a blackboard feel so awful? Why are you not allowed to carry more than 100ml of liquids on a plane? Why do computers get viruses? Why… Why this? Why that? There are many questions one can easily ask but hard to get the right answers. Come to think of it, there are many scientific mysteries hidden in our everyday life.