Click the option of your choice to cast your vote.
| Moonlanding | 158 | 31.9% |  |
| Nuclear power | 38 | 7.7% | |
| Language | 34 | 6.9% | |
| Printing press | 31 | 6.3% | |
| Wheel | 34 | 6.9% | |
| Penicillin | 37 | 7.5% | |
| Harnessing Fire | 32 | 6.5% | |
| Democracy | 31 | 6.3% | |
| Electricity | 33 | 6.7% | |
| Moonwalking | 33 | 6.7% | |
| 42! | 35 | 7.1% | |