Princess Charlene poses after the arrival of the Riviera Water Bike Challenge in support of the Princess Charlene of Monaco Foundation, in Nice, France, June 4, 2017. (Photo by Eric Gaillard/Reuters)
German kickboxer Christine Theiss (L) hits challenger Olja Zerajic of Bosnia during their WKA middleweight title fight at Postpalast on March 2, 2012 in Munich, Germany. (Photo by Alexandra Beier/Bongarts/Getty Images)
Hikaru Cho believes that we should challenge our imaginations to create new work using traditional tools, not fancy computers and software. (Photo by Jim Marks/PA Wire)
“The Challenge!” Young boy relishes in a game of tug of war before school. Photo location: Lake Titicaca, Peru. (Photo and caption by Paul Heyman/National Geographic Photo Contest)
A Maori warrior prepares to challenge Prince Charles during his welcome to Takanhanga Marae in Kaikoura, New Zealand November 23, 2019. (Photo by Tracey Nearmy/Reuters)
Race-goers enjoy a drink during the “Ladies Day” at the Epsom Derby in Epsom Downs, Britain, 02 June 2023. The Epsom Derby Festival of horse racing takes place on 02 and 03 June 2023. (Photo by Neil Hall/EPA)
Models present creations by DAQQAB during the Petjoy Fashion Week in Shanghai, China, 02 November 2025. The 2025 Petjoy Fashion Week runs from 31 October to 02 November at the Shanghai Fashion Center. (Photo by Alex Plavevski/EPA)