What do you do with the empty plastic bottles that you really shouldn't have been drinking out of, anyway? These British school children spent a year and half collecting 1,500 of them and used the bottles to construct a greenhouse, in which they are very successfully growing tomatoes.
![](https://grist.org/wp-content/uploads/2011/07/mountaintop_removal_ilovemountains1.jpg?quality=75&strip=all&w=500)