| December 27, 2012 |
| This week's projects take on challenges great and small. A designer invents a low-cost mine detector, a veteran animator tries something new, and a village bands together to write a book. |
| December 27, 2012 |
| This week's projects take on challenges great and small. A designer invents a low-cost mine detector, a veteran animator tries something new, and a village bands together to write a book. |
