File this one under “you learn something new every day.” Apparently, there’s a bush called Dictamnus albus that, at certain times during the year, produces an oily substance that, in the summer eat, occasionally spontaneously sparks. The flame burns off rapidly enough that the plant is generally left unscathed.

This is not an attempt to provide a scientific explanation for the Moses story, in parts because I don’t, as a rule, go there, but also because the plant is native to Europe and Asia but not North Africa or the Middle East.