For when you look at what Santa purports to do each year, it seems that he has harnessed some basic rules of physics, aerodynamics, reindeer biology (and, OK, maybe just a little magic) to get ...

Santa had better rely on Rudolph and the gang. On the ground, the reindeer generate the force needed to move forward by stomping their extra-wide hooves on the ground as they run.

Fortunately, we can do that. For when you look at what Santa purports to do each year, it seems that he has harnessed some basic rules of physics, aerodynamics, reindeer biology (and, OK, maybe ...