The toothpaste that changes flavor with the weather

It tastes like mint when snow is falling and cinnamon when it's warm outside. Is weather-report toothpaste the wave of the future?

A stripe in your toothpaste could mean more than a burst of flavor, with the help of weather-reading technology.
(Image credit: Corbis)

If your numbing morning routine could use a meteorological twist, David Carr, a scientist at MIT's Media Lab, may have the solution: A diverting toothpaste called "Tastes Like Rain" that changes flavor and even color depending on the day's weather forecast. Minty means it's colder than the day before, while cinnamon means it's warmer. Should the paste develop blue stripes, precipitation's on the way. It's all part of the lab's effort to imbue everyday objects with "dynamic properties that can intuitively communicate simple and relevant information." Is this just a novelty prototype, or should Colgate be concerned?

How does it work?

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