Officials in Broward County, Florida are considering adding recycled glass to eroding beaches. Sand is, after all, the main ingredient in glass. Tests have shown that organisms can live in the crushed glass just as they do in sand. But some remain concerned that there could be “unforeseen consequences.” Glass Beach in Fort Bragg, California, a former dump that now has beautiful, naturally tumbled seaglass, was the inspiration for the recycled glass as sand idea.