Pitch

If you're not born with perfect pitch, prior studies suggest, your only hope of getting it is to receive musical training at a critical period in your childhood. New research at the University of Chicago suggests otherwise, however. Perfect pitch might be attainable well into adulthood.

A decades-long experiment at Trinity College Dublin has been caught in the act of providing a new data point. Pitch is a (very) viscous liquid, with a viscosity of 20-100 billion times the viscosity of water.