Monday, May 31, 2010
(Adapted from conversation around the campfire last night). As we're all staring into the fire, suddenly a part of the log flares up:
Me: Did you see that? Where does that energy come from?
Me: You think there's hydrogen inside the log?
Me: What's in the log that burns?
Me: Where does the wood come from?
Son: The tree makes it
Me: Where does the tree get energy?
Daughter: From the sun!
Son: But isn't the sun hydrogen?