Heart transplants are nothing short of a miracle of medicine. But at the same time, it requires someone to lose their life for doctors to save a life. We're literally trading lives. Also, there are just not enough hearts to go around, especially for kids with heart problems.
Enter Dr. Doris Taylor, who is building hearts from scratch, using stem cells. https://www.allevi3d.com/building-a-heart-from-scratch/
Now, that's a reason for #techoptimism

