Tim Grobaty: Santa Claus - Behind the Christmas magic  Santa
Claus will deliver gifts to the homes of well-behaved children
late this evening and in the early hours of Christmas.  Q:
According to your blog, you visit a little more than 300 million
houses/condos/apartments in the hours before Christmas morning.
How is that physically possible?  A: Wow. Great question. No
one's ever asked me that before. Have you read Stephen Hawking's
"A Brief History of Time?"  Q: Yes.  A: Really?  Q: No.  A:
Well, the short answer is you can bend light. Plus there's
wormholes. I could explain it if I had a chalkboard and you knew
advanced math and quantum physics.  Q: I suppose wormholes
explain how you carry enough toys in your sled for that many
households.  A: Wormholes, black holes and dark matter.  Q:
Flying reindeer?  A: Accelerated selective breeding.  Q: Making
a billion toys using nothing but a little workshop full of elves
with primitive tools?  A: Some of the stuff falls off Wal-Mart
trucks.  Q: According to the H