Adidas, Converse and Nike are among those advancing cutting-edge circular shoes
Each year, companies churn out about three pairs of shoes for each person on the planet. The textiles, rubbers, leathers, plastics and glues in those 24 billion pairs are mostly a waste: Brands fail to design for longevity, material reuse or recycling, so consumers dump some 300 million worn-out pairs in the trash each year.…