Lightning strikes the Willis Tower (formerly Sears Tower) in downtown on June 12, 2013 in Chicago, Illinois. (Photo by Scott Olson/Getty Images)

Penny Farthing cyclists ride near Tower Bridge on June 9, 2011 in London, England. The riders have cycled from Paris ahead of the IG Markets London Nocturne cycling event on June 11, 2011. (Photo by Peter Macdiarmid/Getty Images)

A cosplay enthusiast waits at the premiere of the movie “Warcraft” in Hollywood, California U.S., June 6, 2016. (Photo by Mario Anzuoni/Reuters)

Pro-government supporters attend a rally of members of the education sector in Caracas, Venezuela June 14, 2016. (Photo by Ivan Alvarado/Reuters)

A man talks on his mobile phone in the village of Devmali in the desert state of Rajasthan, India June 14, 2016. (Photo by Himanshu Sharma/Reuters)

Britain Horse Racing, Royal Ascot, Ascot Racecourse on June 16, 2016. Ladies Day Racegoers wear hats. (Photo by Toby Melville/Reuters)

An emu runs to escape an approaching wildfire as it burns near Potero, California, U.S. June 20, 2016. (Photo by Mike Blake/Reuters)

A Muslim boy takes part in Friday prayers on a street outside a mosque in Mumbai, India, June 24, 2016. (Photo by Shailesh Andrade/Reuters)