Thermoelectric materials convert temperature differences into electric voltages and vice versa. The Peltier Effect, which allows voltages to provide either heating or cooling, is used in portable coolers and in some car seats. But the Seebeck Effect, which produces electricity from temperature differences, has far more potential for practical use.
One of the highlights of visiting tropical destinations such as the Caribbean and the South Pacific is the profusion of colorful tropical fish that inhabit the warm waters of these places. Climate change is raising water temperatures far from the tropics and tropical fish are migrating to entirely new locations. While this may sound like a good thing, is definitely isn’t.