Episode 500: QA 81: Did Life Evolve Only Once? And More... Featuring Science Mom
- Author
- Fraser Cain
- Published
- Sun 24 Mar 2019
- Episode Link
- https://universetoday.fireside.fm/500
In this week's QA, we discuss infecting Mars with diarrhea, if life evolved more than once, and why other countries don't help explore space.
