| Clue | Source | Date |
|---|---|---|
| Hypothetical evolutionary starting point | The Washington Post | 28 May 2020 |
| Hypothetical evolutionary starting point | LA Times Daily | 28 May 2020 |
| *Gumbo seasoned with amino acids and ancient organic compounds | The Washington Post Sunday | 05 Jan 2020 |
| Source of life, some say | Universal | 23 May 2019 |
| Source of life, some say (3, 4, 13) | ||
| Organic material in proper pool (radius varying) | The Times Cryptic | 17 Oct 2016 |
| Early life, some say | ||
| Evolutionary starting point | ||
| Origin of life |