The Science Of Replacing Body Parts, From Hair To Hearts

The Science Of Replacing Body Parts, From Hair To Hearts

In “Replaceable You,” Mary Roach describes mind-boggling efforts to replace human body parts—and why it’s proven to be so difficult.

Science writer Mary Roach chronicles the effort to fabricate human body parts in her new book, Replaceable You: Adventures in Human Anatomy.

Host Flora Lichtman speaks with Roach about everything from hair transplants to 3D-printed hearts, and why our anatomy is so hard to replicate in the first place.

Mary Roach is the author of Stiff: The Curious Lives of Human Cadavers, and many other books.

Author's summary: Mary Roach's book explores human body parts replacement.

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Science Friday Science Friday — 2025-10-15

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