Remember a few years when the Bhut Jolokia (a.k.a. the Ghost Pepper) was purported to be the hottest chile in the world? Well not so much anymore. It's not even in the top 5 these days. Depending on what you read or who you believe, the current hottest chile pepper in the world is either the Trinidad Moruga Scorpion or the Carolina Reaper.
Photo by Kenneth M. Ruggiano Geeta Bansal