Organizers of the 2020 Tokyo Olympics on Wednesday unveiled the gold, silver and bronze medals to be created entirely from metals recycled from mobile phones and other electronic devices, as they marked exactly a year to go until the games.With a diameter of 85 millimeters, the gold and silver medals will be the heaviest ever used at a Summer Games, weighing in at 556 and 550 grams, respectively, the local organizing committee said.On the back, the winners' medals bear the Olympic rings and Tokyo 2020 logo inside a swirl design, intended to sparkle with myriad patterns of lights to represen…READ FULL ARTICLE