The Denver Green Buildings Ordinance is a building code that requires buildings larger than 25,000 square feet to dedicate a section of their roofs to solar or rooftop gardens, with portions ranging ...

Bees, rare orchids and hoverflies are just some of the wildlife that can live on urban green roofs. Green roofs are designed to allow plants to grow on their surface. They need to be strong enough to ...

Take a tour of the green roof atop WWF-US's headquarters in Washington, DC. Since 2010 this state-of-the-art, eco-friendly roof has been home to tens of thousands of plants, providing habitat for ...