Click the option of your choice to cast your vote.
| Moonlanding | 197 | 22.0% |  |
| Nuclear power | 72 | 8.1% | |
| Language | 61 | 6.8% | |
| Printing press | 77 | 8.6% | |
| Wheel | 69 | 7.7% | |
| Penicillin | 95 | 10.6% | |
| Harnessing Fire | 80 | 8.9% | |
| Democracy | 60 | 6.7% | |
| Electricity | 57 | 6.4% | |
| Moonwalking | 56 | 6.3% | |
| 42! | 70 | 7.8% | |