Click the option of your choice to cast your vote.
| Moonlanding | 135 | 47.7% |  |
| Nuclear power | 19 | 6.7% | |
| Language | 16 | 5.7% | |
| Printing press | 14 | 4.9% | |
| Wheel | 13 | 4.6% | |
| Penicillin | 16 | 5.7% | |
| Harnessing Fire | 13 | 4.6% | |
| Democracy | 14 | 4.9% | |
| Electricity | 16 | 5.7% | |
| Moonwalking | 12 | 4.2% | |
| 42! | 15 | 5.3% | |