In April 2016, Let’s Talk Science volunteer Daniel Tarade donated stem cells to help a person who needed a stem cell transplant to survive. Learn what stem cells are, how and why people donate, and what Daniel’s experience was like.

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How does robotic surgery work, and what are the pros and cons of using it?

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When under anesthesia, you can’t move, form memories, or — hopefully — feel pain. And while it might just seem like you are asleep for that time, you actually aren’t. What’s going on? Steven Zheng explains what we know about the science behind the different types of anesthesia and how they exert their effects. (4:55 min.)

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Mussels' natural “stickiness” is helping scientists develop alternatives to techniques currently used to close up surgical wounds.

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Most celebs don't deny it — nose jobs are the IT thing in showbiz. So what's behind the nose job?

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You probably haven’t thought about yourappendix much, unless it’s landed you in the hospital for emergency surgery.But what exactly is your appendix, and is it really as useless as most peoplebelieve?

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So how does laser eye surgery actually work?

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