Chris Nikic has Down Syndrome, says his goal for 2021 will be even bigger
                                
                                
                                    (Newser) -
                                    For the first time, a competitor with Down syndrome has completed an Ironman triathlon. Chris Nikic achieved the impressive physical feat Saturday in Florida,  CNN  reports. The event consists of a 2.4-mile swim, a 112-mile bike ride and a 26.2-marathon run; Nikic completed the course in 16 hours,...