Click the option of your choice to cast your vote.
| Moonlanding | 160 | 31.4% |  |
| Nuclear power | 39 | 7.6% | |
| Language | 36 | 7.1% | |
| Printing press | 33 | 6.5% | |
| Wheel | 35 | 6.9% | |
| Penicillin | 38 | 7.5% | |
| Harnessing Fire | 34 | 6.7% | |
| Democracy | 31 | 6.1% | |
| Electricity | 34 | 6.7% | |
| Moonwalking | 34 | 6.7% | |
| 42! | 36 | 7.1% | |