It's been explained, and some have pointed you to resources that explain it. You simply refuse to accept the explanations: there is no mystery here that cannot be understood with a basic knowledge of chemistry and biology.Bacteria can survive high temperatures, humans will turn into ashes, if not strange then can
you explain how this to be simple?
In simple terms, it is in the evolved nature of bacteria that in any sample, a few individuals may survive under conditions that would be fatal to humans or other multicellular life...and in fact, is fatal to most of the bacteria. Humans evolved to survive under much more limited conditions than bacteria. By the way, not all species of bacteria can survive boiling or other extreme conditions, and while some species thrive under extreme conditions, many species of bacteria are only able to survive brief exposure to those conditions.