The pepper world takes its hotness seriously. Each year, new varieties are being planted and cultivated to come up with the hottest peppers in the world. It’s more than just a contest to farmers and scientists; it is really a quest to round up the hottest and fieriest pepper species in the planet. These peppers are tested, checked and measured in terms of their spiciness using scientific methods. In fact, a standard of measurement called the Scoville Scale, was developed to measure the hotness of peppers. The peppers are then ranked based on SHU or Scoville Hotness Unit.