‘ I was in the early days of my acting career in 1962, when Rachel Carson’s Silent Spring made its way onto best-seller lists and college campuses and into living rooms across America and sowed the seeds of today’s environmental movement. The story of that movement still represents for me who we are as a country: a people dedicated to something greater than .  .  .” (Robert Redford, “Why I’m Supporting President Obama,” Huffington Post, October 19).