Mission Unstoppable: Temporada 2, Episódio 20

2 - 20: Printing, Planting and Popularity

A college student shows how she uses her 3D printer. An environmental restorationist shows how she works to restore the natural environment with her team. A microbiologist shows how to make a do-it-yourself microscope. A neuroscientist explains what's going on in the brain when someone feels left out.