Have you ever thought about those bare, exterior walls of your home or school? If so, you would be current with one of the hottest trends in civil and environmental engineering: Redesigning buildings to take full advantage of solar energy, like this “edible green screen” created by students at the University of Washington’s College of Built Environments.

The idea behind green walls, or vertical gardens, can be traced back to the Hanging Gardens of Babylon. In Babylon, plants were said to have been cultivated at a height above ground level. In modern times, the idea of similar gardens has become a way to bring more greenery to cityscapes while also making urban areas more environmentally friendly.

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Tags: Architecture, Biodiversity Green Wall, building, Edible Green Screen, Environmental Engineering, Green, Sustainability, University of Washington