Researchers in Cleveland have come up with a new biosensor that’s a million times more sensitive than current technology. In this week’s Exploradio, WKSU’s Jeff St.Clair looks at how harnessing one of the unusual properties of gold has allowed for a quantum leap forward. First of all – a biosensor is a something that detects small amounts of a biological chemical – your nose is a good example. You inhale a molecule, it lands on a receptor inside your nose which sends a signal to your brain. For