An Iraqi military vehicle passes displaced Iraqi boys returning to their homes in West Mosul's Oreibi neighbourhood after government forces retook control of the area from the Islamic State (IS) group during the ongoing offensive against the jihadists on May 21, 2017. (Photo by Ahmad Al-Rubaye/AFP Photo)

The oldest car to wear the Porsche badge goes on view at Sotheby's on May 21, 2019 in London, England. The only surviving 1939 Porsche Type 64 Berlin-Rome, No. 3, this rare piece of motoring history was the personal car of Ferdinand and Ferry Porsche, predating the first production Porsche, the 356. The car is on view at Sotheby's in London from 21st -24th May prior to being offered for sale by RM Sotheby's in Monterey, California, 15-17th August 2019, with an estimate in excess of $20 million. (Photo by Tristan Fewings/Getty Images for Sotheby's)

A young USA fan smiles ahead of the 2019 Concacaf Gold Cup semifinal football match between USA and Jamaica on July 3, 2019 in Nashville, Tennessee. (Photo by Ricardo Arduengo/AFP Photo)

A Goodwood official prepares to brave the rain on the opening day of the Glourious Goodwood, racing festivall at Goodwood Racecourse, Chichester, England on July 30, 2019. (Photo by David Hartley/PA Wire Press Association)

The trees on the iconic local landmark are silhouetted against glorious sunrise colours on a misty morning near Colmers Hill in Dorset, England on May 1, 2019. (Photo by Celia McMahon/Alamy Live News)

A camel calf is seen among a herd in the desert near Dakhla in Morocco-administered Western Sahara, on October 13, 2019. In the Oued Eddahab desert in Western Sahara, Habiboullah Dlimi raises dairy and racing camels just like his ancestors used to, but with a little help from modern technology. While his animals roam free and are milked traditionally, by hand, at dawn and dusk, they are watched over by hired herders and Dlimi follows GPS coordinates across the desert in a 4X4 vehicle to reach them. (Photo by Fadel Senna/AFP Photo)

Meropidae are seen on a rock in Van in Turkey on March 03, 2018. (Photo by Ali Ihsan Ozturk/Anadolu Agency/Getty Images)

In this September 1, 2014 photo released by the U.S. Geological Survey, fluid lava streams from the June 27 lava flow from the Kilauea volcano in Pahoa, Hawaii. The June 27 lava flow is named for the date it began erupting from a new vent. The Hawaiian Volcano Observatory issued a warning Thursday, September 4, 2014 to a rural community in the path of a lava flow on Hawaii's Big Island, as the molten rock moved to within a mile of homes. Observatory scientists said lava from the Kilauea volcano could reach the Kaohe Homesteads in five to seven days if it continues advancing through cracks in the earth. (Photo by AP Photo/U.S. Geological Survey)