Do you have a question for a scientist featured in the latest episode of Frontiers? Here's your chance to stand in Alan Alda's shoes. Click on a scientist's name below to read a brief bio and to e-mail your question. A selection of answers will be posted online.

Please e-mail your questions before February 6th, 2001

James Lock		Inventor of the cocktail umbrella-like device that helps young Josh in "Mending A Broken Heart."
Robert Michler and Randall Wolf		Demonstrate minimally invasive heart surgery using tiny robotic "hands" in "Robot Heart Surgeon."
David Lederman		Works to perfect the promising AbioCor total artificial heart in "The Heart Factory."
Daniel Levy		Puts Alan Alda to the heart-health test in "How's Your Heart?"