| NAME | Yuta Yamaki |
|---|---|
| AGE | 10 |
| PRIZE | The Prize of the Director of the National Science Museum |
| COMMENTARY | This machine sucks in air that has been polluted with exhaust gases, extracts only the oxygen, and returns the oxygen to the air. Also, water is passed through pipes under the ground, which cools roads in summer. This heated water is put to good use. |