A Chemical Reaction: The Story of a True Green Revolution Dr. Greene's Blog Published: September 25, 2009 Dr. Greene is interviewed in A Chemical Reaction. His part is tiny, but the movie powerful. Environmental Health Dr. Alan Greene Dr. Greene is a practicing physician, author, national and international TEDx speaker, and global health advocate. He is a graduate of Princeton University and University of California San Francisco. Get Dr. Greene's Wellness Recommendations Sign up now for a delightful weekly email with insights for the whole family. Success! Now check your email to confirm your subscription. There was an error submitting your subscription. Please try again. First Name Email Address We use this field to detect spam bots. If you fill this in, you will be marked as a spammer. Send me the tips!