New carbon dioxide ventilators could turn fumes into fertilizer to bring vegetable patches to high rise rooftops, suggests a new study. It wasn’t just suggested, the study included an experiment that found spinach by the new air vents grew four-times larger than the other plants. The breakthrough is a promising development for healthier city life, … Continue reading New Rooftop CO2 Ventilators Funnel Fumes into Fertilizer that Makes Spinach Grow 4x Bigger in Roof Gardens