What do hot air balloons and incandescent bulbs have in common? They are similar in shape and both produce/use heat. According to Wikipedia, “a hot-air balloon is a lighter-than-air aircraft consisting of a
My Green Montgomery is a project of the Montgomery County Department of Environmental Protection. It is a service to help Montgomery County residents think and live in a way that safeguards and sustains the health of our people, our county, and the planet.