| user: | edferda |
| created: | January 7, 2013 |
| karma: | 392 |
| 1. | |
| 2. | How a differential gear works (1937) [video](youtube.com) |
| 3. | What each country leads the world in(fastcocreate.com) |
| 4. | |
| 5. | Curiosity life changing secret revealed[video](youtube.com) |
| 6. | 13 years ago | discuss |
| 7. | Sends a camera through mail to record the process(hackaday.com) |
| 8. | Kayaking through an active volcano(mymodernmet.com) |