This is a truly heartening story about one man's quest to create the propulsion system that may well be what gets us to Mars. Chemical rockets are just too primitive and underpowered. His plasma engines may just do the trick. He's living his dream and may help us fulfill ours.
https://www.texasmonthly.com/articles/the-astronaut-who-might-actually-get-us-to-mars
https://www.texasmonthly.com/articles/the-astronaut-who-might-actually-get-us-to-mars