Click the option of your choice to cast your vote.
| Moonlanding | 51 | 44.3% |  |
| Nuclear power | 5 | 4.3% | |
| Language | 8 | 7.0% | |
| Printing press | 9 | 7.8% | |
| Wheel | 7 | 6.1% | |
| Penicillin | 8 | 7.0% | |
| Harnessing Fire | 4 | 3.5% | |
| Democracy | 7 | 6.1% | |
| Electricity | 8 | 7.0% | |
| Moonwalking | 4 | 3.5% | |
| 42! | 4 | 3.5% | |