Carbon dioxide
File sealed
The detectives are still writing this one up. The poster and the facts are below; the film and the interrogation room open soon.
Booking photographs
The suspect, from its real atomic coordinates. Drag to turn it. Height chart in nanometers, ruled every 0.02 nm. A seltzer bubble a millimeter across is about two million times wider.
Rap sheet
- Answers to
- CO2. “Fixed air” in old books.
- Height
- 0.55 nm, end to end.
- Weight
- 0.073 zeptograms
- Build
- Three atoms in a dead straight line. Same from every side.
- Taste
- Sour, it turns out. Tasted by your tongue’s sour cells.
- Habits
- Skips being a liquid. Dry ice goes straight to gas.
- Associates
- You. You breathe out about two pounds of it a day.
- Known for
- The first fizzy water: a bowl hung over a brewery’s beer vat.
- Last seen
- A 5 mL tube marked SELTZER in the fridge at HQ.
of them in a sealed 12 oz can of seltzer, give or take.
Cans vary. You’ve never seen one.
The poster on the street
This is the photocopied wanted poster for Carbon dioxide, No. 54. They were made for noticeboards around Boston, Cambridge and the rest of the east coast.
Found one? Scan its QR code with your phone. If you're a signed-in player, the sighting goes on your record with +1 XP.
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