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The Exit Sign Culture Clash
- Exit signs follow two global standards: a big red word (EXIT) and a green running-man pictogram.
- The pictogram became an ISO standard in the 1980s, creating visible international design conflict.
Merriam‑Webster's Backward Index
- Miriam Webster stored a 315,000-card backward index in a Massachusetts office basement for rhyming and suffix searches.
- Each card lists a readable word and its reversed form so editors could find words with the same ending.
Mobius Strip Solves Hot Belt Cooling
- A Mobius-strip conveyor belt doubles usable surface area without adding parts or changing speed.
- B.F. Goodrich patented this 1957 geometric tweak so the belt cooled longer and lasted longer.