Explores the science behind limb and organ replacements for people.

Body parts -- Wooden toes, lead teeth -- Legs, hips, and joints -- Case study: Oscar Pistorius -- Case study: Aimee Mullins -- Arms and hands -- Case study: Evan Reynolds -- Case study: Jeff Kepner -- Eye to eye -- Case study: Ron's bionic eye -- Hear, hear! -- Case study: Sarah Novick -- Skin and tissue -- Case study: Isabelle Dinoire's new face -- Hearts, blood, and vessels -- Case study: Baby Fae -- Organ replacement -- Case study: Chris Klug -- Artificial bones -- Frontiers of science.