People look at a RoboThespian humanoid robot at the Tami Intelligence Technology stall at the WRC 2016 World Robot Conference in Beijing, China, October 21, 2016. The conference showcased China's burgeoning robot industry as the nation seeks to increase the use of robots in its manufacturing and service industries. (Photo by Thomas Peter/Reuters)

A woman smokes a cigar as she reads the newspaper in a street of Havana, on November 26, 2016, the day after Cuban revolutionary leader Fidel Castro died aged 90. One of the world's longest-serving rulers and modern history's most singular characters, Castro defied 11 US administrations and hundreds of assassination attempts. (Photo by Yamil Lage/AFP Photo)

Tim Anderson final balanced rock stack in the Llano River. Tim Anderson, rock balancing “pro” from Pennsylvania, carefully worked to balance his stack on a dry spot in the Llano river Saturday March 12, 2016. He was an honored guest of the festival and enjoyed visiting Texas so he came for another year. The river was higher this year because of the rains so the balancers could not get to the better rock that were available last year. (Photo by Nell Carroll/American-Statesman)

Activists stage a protest outside the Louvre pyramid, calling the museum to cancel its contracts with French oil giant Total and Italian oil company Eni, in Paris, France, December 9, 2015, as the World Climate Change Conference 2015 (COP21) continues at Le Bourget near the French capital. (Photo by Benoit Tessier/Reuters)

Special Merit Award. Mallory Franklin (2019). The British slalom canoeist has competed internationally since 2009 and won nine medals in total at the ICF Canoe Slalom World Championships with four golds, four silvers and a bronze. She has also won eleven medals at the European Championships. (Photo by Richard Pelham/World Sports Photography Awards 2021)

Sap runs out of a frankincense tree near Mader Moge, Somaliland, a breakaway region of Somalia on August 4, 2016In a tradition dating to Biblical times, men rise at dawn in the rugged Cal Madow mountains of Somaliland in the Horn of Africa to scale rocky outcrops in search of the prized sap of wild frankincense trees. (Photo by Jason Patinkin/AP Photo)

A participant covers himself with a blanket as it rains at the venue of the World Culture Festival on the banks of a river in New Delhi, India, March 11, 2016. (Photo by Adnan Abidi/Reuters)

People walk on the “Europabruecke” bridge, the world's longest pedestrian suspension bridge with a length of 494m, after the official inauguration of the construction in Randa, Switzerland, 29 July 2017. The bridge is situated on the Europaweg that connects the villages of Zermatt and Graechen. (Photo by Valentin Flauraud/EPA)