The moon sets behind the Vidigal favela in Rio de Janeiro. REUTERS/Bruno Kelly
Flames whipped by strong winds burn though a hillside before destroying camper vans during the Blue Cut Fire in San Bernardino County, California. REUTERS/Patrick T Fallon
Syrian refugee girl Housaida rests inside the Spanish rescue vessel Astral after being rescued by the Spanish NGO Proactiva off the Libyan coast in the Mediterranean Sea. REUTERS/Giorgos Moutafis
Wagons of a freight train are seen on the Tolten river after a bridge collapsed in Pitrufquen village, in the Araucania region, south of Chile, August 18, 2016. REUTERS/Cristobal Saavedra
A casket is seen floating in flood waters in Ascension Parish, Louisiana, August 15, 2016. REUTERS/Jonathan Bachman
A man collects coconuts and other items thrown as offerings by worshippers in the Sabarmati river, a day after the "Dashama" festival in Ahmedabad, India, August 12, 2016. REUTERS/Amit Dave
Photographers work from the photographers' tribune in Rio de Janeiro. REUTERS/Athit Perawongmetha
Children play "Pokemon GO" on the Pokequan GoBoat Adventure Cruise in the Occoquan River in the small town of Occoquan, Virginia, August 14, 2016. REUTERS/Sait Serkan Gurbuz
A Palestinian man points a plank at Israeli troops during clashes in the West Bank Al-Fawwar refugee camp, south of Hebron August 16, 2016. REUTERS/Mussa Qawasma
Damage is seen inside a hospital operated by Medecins Sans Frontieres after it was hit by a Saudi-led coalition air strike in the Abs district of Hajja province, Yemen August 16, 2016. REUTERS/Abduljabbar Zeyad
Women carry newborn babies while reacting after they were evacuated by the Syria Democratic Forces fighters from an Islamic State-controlled neighborhood of Manbij, in Aleppo Governorate, Syria, August 12, 2016. The SDF has said Islamic State was using civilians as human shields. REUTERS/Rodi Said
Revellers chat on Havana's Malecon seafront before performing at a carnival parade, Cuba, August 12, 2016. REUTERS/Alexandre Meneghini
Participants climb greased poles to collect prizes during a "Panjat Pinang" event organized in celebration of Indonesia's 71st Independence day in Jakarta, Indonesia. REUTERS/Iqro Rinaldi
Storm clouds hover above the Washington monument in Washington D.C., U.S., August 15, 2016. REUTERS/Mike Hutchings
The Airlander 10 hybrid airship makes its maiden flight at Cardington Airfield in Britain. REUTERS/Darren Staples
U.S. swimmers Jack Conger and Gunnar Bentz are escorted into a police station the morning after they were stopped from boarding a flight to the United States, in Rio de Janeiro, August 18, 2016. REUTERS/Ueslei Marcelino
A huge plume of smoke crosses over Interstate 15 during the Blue Cut fire at the Cajon Pass in San Bernardino County, California. REUTERS/Patrick T Fallon
Free Syrian army fighters stand atop of a hill as the moon is seen in the background in the south of Nawa city, in Deraa Governorate, Syria. REUTERS/Alaa Al-Faqir