Earth’s Greenhouse Effect —  March 5, 2015     MAASCH: “If not for the greenhouse effect, life as we know it would not exist on this planet.” That’s Kirk Maasch of the University of Maine. He explains that like any good home in a cold region, our planet has a heating system. It’s called the read more Human Activities are Intensifying the Earth’s Natural Greenhouse Effect — Maasch — Yale’s Climate Connection