Associated Press: There was no “Green Movement” yet and little talk of global warming. Instead, the original Earth Day 40 years ago emphasized “ecology” and goals like cleaning up pollution and litter — along with a more anti-establishment vibe than today. “Welcome, sulfur dioxide, hello, carbon monoxide,” a woman sang from the 1968 countercultural Broadway hit, “Hair,” at a rally in Philadelphia that day. Across the country, activists donned gas masks or spread out in grassy parks to hear speeches …