From green business and new environmental legislation to how nature impacts our environment in ways never before considered, Earth Wise offers a look at our changing environment.

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Recovering waste heat

internal combustion

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.



Trouble from tropical fish

tropical fish

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.



Light rail systems really help

light rail

More and more American cities have been adding or expanding light rail systems in recent years.  Notable examples over the past decade include Los Angeles, San Francisco, Portland, Dallas and Denver.



Hellbender populations


North America’s largest salamander is disappearing at an alarming rate. Hellbenders commonly reach two feet in length and have a life span of up to 30 years. They are the third-largest salamander in the world, after the Chinese giant salamander and the Japanese giant salamander.



Throwing away fish

trawling nets

The worldwide fishing industry is in danger.  If current trends continue, it could collapse by 2050 because three-quarters of the world’s fish stocks are being harvested faster than they can reproduce.  Some 80% of fish species already are fully exploited or are in decline and the great majority of all large predatory fish already are gone.


Earth Wise is a presentation of WAMC Northeast Public Radio and The Cary Institute of Ecosystem Studies Follow us Facebook Twiter RSS Podcast