This is probably one of the the greenest buildings in the world today. The 54 storey building is constructed to use the natural daylight as much as possible, but the sun is also wisely used for collecting solar energy. The rainwater is reused; the raw materials used for construction are made from renewable and recycled sources from New York area.
"Farming is moving indoors, where the sun never shines, where rainfall is irrelevant and where the climate is always right. The perfect crop field could be inside a windowless building with meticulously controlled light, temperature, humidity, air quality and nutrition. It could be in a New York high-rise, a Siberian bunker or a sprawling complex in the Saudi desert." USA Today