New York Times: So strong was the antibusiness sentiment for the first Earth Day in 1970 that organizers took no money from corporations and held teach-ins “to challenge corporate and government leaders.’ Forty years later, the day has turned into a premier marketing platform for selling a variety of goods and services, like office products, Greek yogurt and eco-dentistry. For this year’s celebration, Bahama Umbrella is advertising a specially designed umbrella, with a drain so that water “can …