NEW YORK, United States (AFP) — In the 1980s, the “Back to the Future” film franchise suggested we would all eventually wear self-lacing sneakers. Then a few years ago, Nike made the movie magic a reality, introducing its first shoe to the public with so-called “power lacing.” And on Tuesday, the global sportswear giant took it a step farther — now your shoes will automatically loosen or tighten when you step into them, and then […]