Traditional cooling systems for buildings use refrigerants and electricity, which contribute to the atmospheric greenhouse effect that exacerbates ... has developed porous plastic sheets that can ...

Plastic sheeting is used as a covering to help let in plenty of light while keeping the cold out. The greenhouse is also heated, and can maintain a 40 deg F temperature differential with 14,000 BTUs.

Some creative micro greenhouse ideas to explore, whether you're using recycled materials or choosing sophisticated glass ...