[kuschku]

> nuclear fission

https://en.wikipedia.org/wiki/Natural_nuclear_fission_reacto...

For pretty much every thing you list, nature has something pretty close to it in it. Even nuclear fission.

[gilleain]

Although natural, that reactor is geological not biological.

It's unlikely that enzymes could catalyse fission reactions. It would be amazing if they could...

[knzhou]

If you really think you can explain all examples, why did you pick one (by far the easiest one) instead of letting me pick? Let’s see some natural examples that use general relativity, superconductivity, the fractional quantum Hall effect, and superfluidity.