Have a cool, green summer

Dear EarthTalk: With summer bearing down on us, are there any environmentally friendly air conditioners out there? –Fred Johansen, Grand Rapids, MI

Air conditioners are essential for keeping us cool and comfortable during hot summer months, but their environmental impact cannot be ignored. Traditional air conditioning units consume significant amounts of energy and rely heavily on refrigerants that contribute to global warming. However, the good news is that there are several environmenta...