Last seen in:
- Thomas Joseph - King Feature Syndicate - Jul 27 2024
- Universal - Dec 16 2023
- L.A. Times Daily - Oct 8 2022
- Family Time - Nov 17 2019
- Thomas Joseph - King Feature Syndicate - Aug 6 2019
- Universal - Feb 25 2018
- USA Today - Feb 9 2016
- Thomas Joseph - King Feature Syndicate - Oct 26 2015
- Family Time - Oct 25 2015
- Family Time - Oct 5 2015
Related Clues:
- Heaviest of the noble gases
- Colorless, odorless alkane
- Third-most common gas in the atmosphere
- Element in air
- Incandescent bulb gas
- Almost 1% of the Earth's atmosphere
- Gas of concern to homeowners
- Gas in arc lamps
- 1980s Big Apple nightclub with a chemical name
- Gas in incandescent lamps, perhaps
- Dangerous household gas
- Bulb gas
- Photographic flash gas
- Most common of the noble gases
- TV-tube material