On today’s show, we’ll talk about the first-ever 3-D printed prosthetic to be used in the Paralympics. Plus, to celebrate the 50th birthday of “Star Trek,” we’re interviewing NASA technologist David Batchelor, who’s ranked the technologies in the series based on how plausible they are.

On today’s show, we’ll talk about the first-ever 3-D printed prosthetic to be used in the Paralympics. Plus, to celebrate the 50th birthday of “Star Trek,” we’re interviewing NASA technologist David Batchelor, who’s ranked the technologies in the series based on how plausible they are.