Learn how New York Sun Works is bringing greenhouse labs to schools in this video from PBS Newshour Weekend. Because the green houses use hydroponics, a method of farming using water and nutrients instead of soil, the greenhouses are lighter and can be built on urban school roofs. New York Sunworks helps coordinate the funding, designing, and construction of the greenhouses. The greenhouses serve as labs, enabling students to learn about environmental science concepts as they grow plants. The curriculum teaches science standards as students learn about urban farming.