Scientists create the world's smallest 'snowman'

The World's Smallest Snowman

For most children the challenge is trying to build the biggest snowman. Scientists, however, enjoy taking on altogether trickier tasks.

You're looking at the tiniest snowman ever built. Well, it looks like a snowman, but this minuscule model about a fifth the width of a human hair is not made out of snow. It's constructed of two tiny tin beads that are usually used to calibrate an electron microscope, and welded together with platinum.