A pig heart in a human? Before this year, a surgery like this seemed unlikely, but over 50 years of innovations have made it possible. WIRED spoke with Dr. Brandon Guenthart to understand exactly how this surgery works, and why the future of surgery might look similar.

Director: Maya Dangerfield
Director of Photography: Tim Neff
Editor: Josh Pullar
Expert: Dr. Brandon Guenthart
Line Producer: Joseph Buscemi
Associate Producer: Samantha Vélez
Production Manager: Eric Martinez
Production Coordinator: Fernando Davila
Post Production Supervisor: Alexa Deutsch
Post Production Coordinator: Ian Bryant
Supervising Editor: Doug Larsen
Assistant Editor: Andy Morell