Click the option of your choice to cast your vote.
| Moonlanding | 158 | 32.3% |  |
| Nuclear power | 38 | 7.8% | |
| Language | 34 | 7.0% | |
| Printing press | 30 | 6.1% | |
| Wheel | 33 | 6.7% | |
| Penicillin | 35 | 7.2% | |
| Harnessing Fire | 31 | 6.3% | |
| Democracy | 30 | 6.1% | |
| Electricity | 32 | 6.5% | |
| Moonwalking | 33 | 6.7% | |
| 42! | 35 | 7.2% | |