The science of yeti footprints

We're at last getting into spring, which means that whatever abominable prints that yetis have left in the snow this year will be melting away into nothing. Possibly, though, they'll be melting into existence before they return to nonexistence. Here's how a little melt can make a yeti track that could fool anyone. » 2/19/13 7:40am 2/19/13 7:40am