Participant wearing medieval costumes perform during an annual re-enactment of a battle near the village of Libusin, Czech Republic, April 23, 2016. About 2000 enthusiasts have come to simulate the medieval battle during the 24rd annual swordsmen gathering in Libusin village. (Photo by David W. Cerny/Reuters)

The Acura Stage area is flooded after a storm dumped several inches of rain on the second Saturday of the New Orleans Jazz Fest at the Fair Grounds, Saturday, April 30, 2016. (Photo by David Grunfeld/NOLA.com/The Times-Picayune via AP Photo)

A fan wipes her lip after she was hit on the mouth by a foul ball hit by Kansas City Royals' Brandon Moss during the third inning of the Royals' baseball game against the Chicago White Sox, Friday, September 22, 2017, in Chicago. (Photo by David Banks/AP Photo)

A fisherman carries a silver carp during a traditional fish haul at the Horusicky pond near the town of Veseli nad Luznici, Czech Republic, Tuesday, October 24, 2017. Each autumn, Czech fishermen get to serious business of a century-long tradition of catching carp for Christmas markets. Southern Bohemia, where the Horusicky pond is located, with its elaborate network of ponds is at the center of the local carp universe. (Photo by Petr David Josek/AP Photo)

A local man looks at a church on top of the Katskhi Pillar, rock mass about 40 meters high, in the village of Katskhi, Georgia, November 27, 2015. The church, built in the ninth century, was later abandoned and it collapsed but was rebuilt in 2003, according to local media. (Photo by David Mdzinarishvili/Reuters)

A replica of the Wall-E character is remotely controlled with a mobile phone by Bolivian student Esteban Quispe, 17, in Patacamaya, south of La Paz, December 10, 2015. Quispe built the Wall-E robot using materials he obtained from a rubbish dump in the town located in the Andean highland region. He hopes to mechanize agriculture in Patacamaya by making use of robots that operate on solar energy, Quispe told Reuters. (Photo by David Mercado/Reuters)

Competitors take part in the Christmas Really Wild Mud Run on a 4.6 miles course across undulating farm land at Celtic Camping, St David's, Pembrokeshire, Wales, December 12, 2015. (Photo by Rebecca Naden/Reuters)

A David Cameron look-alike poses with a polar bear model outside the Houses of Parliament as part of a Greenpeace protest on May 13, 2011 in London, England. The environmental charity Greenpeace arranged the protest to highlight the first anniversary of David Cameron’s speech when he pledged to make his new government the greenest ever. In April 2006 Mr Cameron traveled by huskie-drawn sledge when he visited the island of Svalbard in Norway to witness the effects of climate change. (Photo by Oli Scarff/Getty Images)