The 2016 Rio Olympics came to a close last Sunday, and, this year, the world saw some pretty incredible, life-changing moments. Michael Phelps swam his last competitive lap, and Usain Bolt took his last sprint around the Olympic stadium track. Both fittingly ended their careers with gold. Fiji historically brought home gold in Rugby — their first Olympic medal in any sport. How big a deal was their win? The Prime Minister declared a national holiday.As amazing as the games were, the Olympic torch has barely stopped smoldering before we have already heard a heroic story from another of the athletes. Discus thrower Piotr Małachowski is auctioning his silver medal to help raise funds for a boy battling cancer... and it's worth way more than any gold.