Below is a list of the guests from episodes that were first aired or last repeated in 2019. To listen, click on the episode title to go to that episode’s page.
| Name | Discipline_Profession | Episode Title | Episode Date | Last Aired |
|---|---|---|---|---|
| Mark Cartwright | Engineering | The Ears Have It | 1/20/2020 | 1/20/2020 |
| Anna Rose Hopkins | Chef | A Twist of Slime | 1/27/2020 |
1/27/2020 |
| Ruth Kassinger | Author | A Twist of Slime | 1/27/2020 |
1/27/2020 |
| Charles Mydlarz | Engineering | The Ears Have It | 1/20/2020 | 1/20/2020 |
| David Owen | Journalist | The Ears Have It | 1/20/2020 | 1/20/2020 |
| Jeff Podos | Biology | The Ears Have It | 1/20/2020 | 1/20/2020 |
|
Katharina Ribbeck |
Biology | A Twist of Slime | 1/27/2020 |
1/27/2020 |
| Steve Simpson | Biology | The Ears Have It | 1/20/2020 |
1/20/2020 |
| Christopher Viney | Biology | A Twist of Slime | 1/27/2020 | 1/27/2020 |
