The Barclays Center opted for a variety of green features. Credit: Adam E. Moreira

Arena designers also repurposed construction materials from the structures that were demolished to make way for the Kings’ new home, resulting in more than one-third of the new building’s material recycled from the old ones. Designers even used recycled athletic shoes for the court surfaces.

Source: Going green: What’s in it for sports venue owners? | Construction Dive