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Grenade vs Polio vaccine
Which invention? Pick one and see how the world splits.
- Grenade 50% · #257 in the world
- Polio vaccine 1952 50% · #260 in the world
What the votes say
The world is split down the middle between Grenade and Polio vaccine: 50% each. Grenade is #257 of the 300 inventions in the world ranking. Polio vaccine is #260, and #90 of the 101 from the 20th century.
Side by side
| Grenade | Polio vaccine | |
|---|---|---|
| World rank | #257 | #260 |
| Year | — | 1952 |