Technology Review article on NASA’s tests to print human organs…but in space! I have a hard enough time trying to get a Thingiverse model printed at the right scale and NASA’s doing this! https://www.technologyreview.com/2021/06/18/1026556/nasa-bioprinting-artificial-organs-space/
Here’s a great video I found from Simply Explained about how mRNA vaccines work. Instead of injecting dead viruses these vaccines provide the code needed to train our bodies against viruses like COVID19.