In this September 14, 2017 photo, young women pose for a photo inside their squatter building that used to house the Brazilian Institute of Geography and Statistics (IBGE) in the Mangueira slum of Rio de Janeiro, Brazil. Many lower-middle class Brazilians who gained ground during the boom years have since slid back closer to the poverty line. (Photo by Felipe Dana/AP Photo)

In this picture taken Thursday, April 14, 2016, a Syrian man carries a carpet as walk through a devastated part of the town of Palmyra as families load their belongings onto a bus in the central Homs province, Syria. Thousands of residents of this ancient town who fled Islamic State rule are returning briefly to check on their homes and salvage what they can – some carpets, blankets, a fridge or a few family mementos. There is no water or electricity in the town, and it will be at least few months before anyone can return to stay. (Photo by Hassan Ammar/AP Photo)

Daimler AG Mercedes-Benz emblems stand ready for attachment to vehicles at the factory on January 30, 2012 in Sindelfingen, Germany. (Photo by Thomas Niedermueller/Getty Images)

A youngster with the Miami Seaquarium Spring Break Campers group gets a chance to touch one of two loggerhead sea turtles that are prepared to be released back into the wild at Bill Baggs Cape Florida State Park after undergoing rehabilitation at Miami Seaquarium March 13, 2012 in Key Biscayne, Florida. (Photo by Joe Raedle/Getty Images)

A Soyuz capsule carrying International Space Station (ISS) crew members U.S. astronaut Scott Kelly, Russian cosmonauts Sergei Volkov and Mikhail Korniyenko descends beneath a parachute near the town of Dzhezkazgan (Zhezkazgan), Kazakhstan, March 2, 2016. (Photo by Kirill Kudryavtsev/Reuters)

Ground personnel work next to the Soyuz TMA-13M capsule of the International Space Station (ISS) crew of Alexander Gerst of Germany, Maxim Suraev of Russia and Reid Wiseman of the U.S. after its landing near the town of Arkalyk in northern Kazakhstan November 10, 2014. A veteran Russian cosmonaut and two International Space Station crewmates, one from the United States and one from Germany, returned safely to Earth on Sunday with a parachute landing of their Soyuz capsule in Kazakhstan, ending 5-1/2 months in orbit. (Photo by Shamil Zhumatov/Reuters)

An arctic tern feeds its chick on the Farne Islands off the Northumberland coast, northern England July 8, 2013. The Farne Islands, which lie off the coast of northeast England, are home to a huge array of wildlife. The islands are owned and protected by the British conservation charity, the National Trust, which says they host some 23 species of seabird, as well as a substantial colony of grey seals, who come to have their pups there in the autumn. Every five years the National Trust carries out a census of the islands' population of puffins, and this year's survey showed there were almost 40,000 nesting pairs on the islands – an 8 percent rise from 2008. (Photo by Nigel Roddis/Reuters)

Locks hang on a fence along the Cliff Walk in Newport, Rhode Island July 14, 2015. They say the whole world loves a lover, but in Newport, Rhode Island, at least, not everyone is fond of the so-called “love locks” that sweethearts are leaving along the resort city's famed seaside Cliff Walk. Hundreds of the padlocks left behind by tourists as romantic tokens now cover sections of a chain-link fence along the route. Each is meant to represent the bond lovers shared during their visit. By custom, the key is thrown away. (Photo by Brian Snyder/Reuters)