Why do the pieces of an old stump glow in the dark?
== == A great question. The mycellium of common mushrooms are
bioluminescent and glow in the dark. These have been used for
centuries. Settlers in the US used to pack them into glass jars and
read books by the light. They called it foxfire. Although most
people don't want to go into the woods at night, there are
wonderful things to discover when you turn off the flashlight!