The photograph captures the terror and swift response after the Boston Marathon bombings. It also shows Devin Wang, the woman behind the wheelchair, doing what she can to help.
Once the quirky domain of super athletes, triathlons have hit the mainstream and brought along an increasing number of deaths. What's happening? There are no simple answers.
The plane crash that killed the 1961 U.S. world championship figure skating team decimated their families and the sport, but alongside grief came renewal.