Electronic Tongue Has a Distinguished 5-Flavor Palate

A piece of paper not much larger than a silver dollar, which was created by a team of researchers at an Illinois University, has the human ability to differentiate between sweetness, saltiness, sourness, bitterness, and savoriness. A variety of different-colored gel pigments are dotted onto the paper and work together to unlock the different tastes.

Future uses for the electronic tongue could be "a kind of breathalyzer that could detect harmful bacteria, and biomolecules, which could provide people with an early warning of diseases such as pneumonia and lung cancer." Fascinating!