Most Americans are now acutely aware of fluctuating energy prices and the environmental implications associated with continued useo f conventional energy sources. Green living is becoming the standard approach, rather than an exception. As a result, the U.S. has t ransitioning energy needs. Steps taken now can help reduce the dependence on non-renewable, foreign and antiquated energy so urces. T his learning unit will examine several types of renewable energy systems that can heat and cool buildings, produce domest