HOW COME? From log to petrified wood
How does ordinary wood turn into petrified wood, which feels like rock? asks a reader.
A petrified log may look like an ordinary wooden log, complete with growth rings and bark. But touch it, and you'll realize that the log is like a model of the original, cast in rock. The stone log may also be streaked with vivid colors and glitter in the sun.
Think of a chunk of petrified wood as...