“You can always back up
and pick a new fork.”
What’s the connection between Kary Mullis and Yellowstone National Park, you ask?
Well, Thermus aquaticus, a thermophilic, chemotroph bacterium was discovered in Yellowstone National Park. A number of enzymes were identified in this organism that likes to grow in 70 °C warm water. Make that 70 °C hot water. One of the enzymes, Taq polymerase, was later used in a technique called PCR, which revolutionized molecular biology. PCR is the brainchild of Kary Mullis.
If you want to read more about Kary Mullis, beware! You might find some strange believes and come across extraterrestrials in the form of a green fluorescent raccoon.