Click the option of your choice to cast your vote.
| Moonlanding | 163 | 30.6% |  |
| Nuclear power | 41 | 7.7% | |
| Language | 39 | 7.3% | |
| Printing press | 35 | 6.6% | |
| Wheel | 37 | 6.9% | |
| Penicillin | 40 | 7.5% | |
| Harnessing Fire | 36 | 6.8% | |
| Democracy | 33 | 6.2% | |
| Electricity | 35 | 6.6% | |
| Moonwalking | 36 | 6.8% | |
| 42! | 38 | 7.1% | |