Robert is a science writer and journalist and a great speaker. His 2011 address at Berkeley is inspirational.
Take home message- Love what you do! and Don't wait- Jump the Cue.
In every career, your job is to make and tell stories, of course. You will build a body of work, but you will also build a body of affection, with the people you’ve helped who’ve helped you back. This is the era of Friends in Low Places. The ones you meet now, who will notice you, challenge you, work with you, and watch your back. Maybe they will be your strength.” ~ Robert Krulwich
Looks like Berkeley link broken..so go to: