In "Dear Albert" - a staged reading of letters written by Albert Einstein - you get the impression of a man grappling with big ideas...and a complicated lovelife. Alan Alda, actor and co-founder of the Center for Communicating Science at Stony Brook University, discusses why Einstein's letters so moved him. He's joined by Brian Greene, co-founder of the World Science Festival and professor of mathematics & physics at Columbia University. They are both taking part in lots of activities this week, including the announcement of the winners in the "What Is Color?" challenge.

With Alan Alda @bgreene will also discuss this AP poll on science + global warming http://t.co/Gl7UNnLZ7E pic.twitter.com/Xin6570j87

— Brian Lehrer Show (@BrianLehrer) May 29, 2014