| user: | trias |
| created: | May 16, 2014 |
| karma: | 123 |
| 1. | Prussian Semaphore System(en.wikipedia.org) |
| 2. | Apollo Guidance Computer(youtube.com) |
| 3. | Chicago Reversed Its River(interactive.wttw.com) |
| 4. | 5 years ago | discuss |
| 5. | |
| 6. | Excessive line breaks are bad(lkml.iu.edu) |
| 7. | Living Root Bridge(en.wikipedia.org) |
| 8. | Mosuo Women(en.wikipedia.org) |