Horse racing is part of Naadam, a festival organized every July in Mongolia to celebrate the People’s Revolution. Using children as jockeys in such races has a centuries-long tradition. Boys and girls as young as 5 (although the law imposes a minimum age limit of 7) ride in races that can be dangerous, with hundreds of horses running across the steppe at distances of 12 to 28 kilometres at great speeds. (Photo by Tomasz Gudzowaty)

Members of the media film as a ranger performs a post mortem on the carcass of a rhino after it was killed for its horn by poachers at the Kruger national park in Mpumalanga province August 27, 2014. Rhino poachers in South Africa now risk giving themselves away when they shoot thanks to a high-tech, gunfire-detection system being piloted in the country's flagship Kruger National Park. The stakes are high, for rhinos are being slain in escalating numbers for their prized horns, alarming both conservationists and the government since wildlife in South Africa is an important tourist draw. (Photo by Siphiwe Sibeko/Reuters)

A Nihang Sikh, belonging to the Sikh warrior clan, performs Gatka, a form of Sikh martial arts, during a religious procession marking the 350th martyrdom anniversary of Guru Tegh Bahadur Ji in New Delhi, India, 25 November 2025. The procession commemorates the martyrdom of the 9th Sikh Guru, Sri Guru Tegh Bahadur Ji, who was executed in 1675 AD for refusing to convert to Islam on the orders of Mughal Emperor Aurangzeb. The event is observed at Gurudwara Sis Ganj in Delhi. Guru Tegh Bahadur, the youngest of the five sons of Guru Hargobind, was born in Amritsar in 1621. (Photo by Rajat Gupta/EPA)

Space Shuttle Discovery is towed from the shuttle landing facility to the orbiter processing facility at Kennedy Space Center on April 20, 2010 in Cape Canaveral, Florida. Discovery's landing attempts at KSC were scrubbed yesterday due to unacceptable weather conditions. Discovery is returning from a successful mission to the International Space Station. (Photo by Matt Stroshane/Getty Images). CAPE CANAVERAL, FL – APRIL 20 2010

Three elephant seals put on a show in Roie Galitz's “Three Tanors”, taken on January 7, 2016 in South Georgia Island. The Comedy Wildlife Photography Awards are in full swing, so check out some of the fierce competitors jostling for the top prize this year. Photographers Paul Joynson-Hicks MBE and Tom Sullam founded the awards to spotlight wildlife conservation efforts and to inject some humour into the world of wildlife photography. (Photo by Roie Galitz/CWPA/Barcroft Images)

This image released by Esquire shows actress Penelope Cruz on the November 2014 cover of “Esquire” magazine. The magazine has named Cruz The Sexiest Woman Alive for 2014. (Photo by AP Photo/Esquire)