Dr. Komba Songu M'Briwah, left, talks on the phone while staff members disinfect offices at the Hastings Ebola Treatment Center in Freetown. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

The Jewel of Muscat, a replica of a ninth century Omani trading ship, sails into the harbor of Galle, Sri Lanka, in 2010. The ship was built in a traditional manner that uses coconut fibers (but no nails) to hold the ship together. The ship followed old routes used by Arab traders. Lakruwan Wanniarachchi/AFP/Getty Images hide caption

itoggle caption Lakruwan Wanniarachchi/AFP/Getty Images

The Islamic Youth Council in Derna, in eastern Libya, is among the local militant groups from Egypt to Libya that have reportedly pledged allegiance to the self-proclaimed Islamic State. Reuters/Landov hide caption

itoggle caption Reuters/Landov

Iraqi Kurdish soldiers, or peshmerga, patrol an area in the recently recaptured town of Zumar, near Mosul in northern Iraq on Oct. 29. When the Islamic State captured the town in August, the Kurds fled. Now that the Kurds are in control, the Arabs are all gone. STR/EPA /LANDOV hide caption

itoggle caption STR/EPA /LANDOV

Palestinian men shout slogans next to Israeli police as they await permission to enter what Jews call the Temple Mount and Muslims call the Nobel Sanctuary, on Nov. 5, in Jerusalem, Israel. On Friday, Israel dropped age restrictions on men attending Friday prayers, a move aimed at lowering tensions around access to the contested shrine. Lior Mizrahi/Getty Images hide caption

itoggle caption Lior Mizrahi/Getty Images

Palestinian members of Hamas' armed wing takes part in a rally Thursday in Rafah, in the southern Gaza Strip. The event was held in memory of Hamas military commanders killed during seven weeks of fighting with Israel in the Gaza Strip this summer. Abed Rahim Khatib/APA/Landov hide caption

itoggle caption Abed Rahim Khatib/APA/Landov

Abigail, 11, sells pastries on a street in El Alto in June. Under the new law, 10-year-olds can work as long as they have parental consent and also attend school. Juan Karita/AP hide caption

itoggle caption Juan Karita/AP

Lionfish, which are native to the Pacific and Indian oceans, are now present in the Atlantic and the Caribbean, where they are devouring smaller fish that protect reefs. The Caribbean island of Bonaire is teaching divers how to catch the venomous fish. Sean Carberry/NPR hide caption

itoggle caption Sean Carberry/NPR

An Iraqi Kurdish Peshmerga fighter hold his position in the mountains east of Mosul. Jim Lopez/AFP/Getty Images hide caption

itoggle caption Jim Lopez/AFP/Getty Images

Visitors walk past a portrait of late communist leader Mao Zedong on Tiananmen Gate in Beijing on Sept. 30, the eve of National Day. Greg Baker/AFP/Getty Images hide caption

itoggle caption Greg Baker/AFP/Getty Images

The Berlin Wall fell on Nov. 9, 1989, 25 years ago this weekend. East Germans flooded into West Berlin after border guard Harald Jaeger ignored orders and opened the gate for the huge, unruly crowd. Alain Nogues/Sygma/Corbis hide caption

itoggle caption Alain Nogues/Sygma/Corbis

Brazil's judicial system faces a massive backlog of cases — and stacks of paperwork. One group of five judges in Sao Paulo is currently handling 1.6 million cases. G Dettmar/National Council of Justice hide caption

itoggle caption G Dettmar/National Council of Justice

American Ryan Boyette, left, works with Yassin Hassen, right, in an interview with a rebel in Sudan's Nuba Mountains. Boyette started the Nuba Reports website in 2011 and recruited Hassen to join as a citizen journalist. Alan Boswell/MCT via Getty Images hide caption

itoggle caption Alan Boswell/MCT via Getty Images

Iranians protest in Isfahan, Iran, last month in solidarity with women injured in a series of acid attacks. Several women have been attacked by assailants on motorcycles who threw acid on their faces, purportedly because they were "badly veiled." Arya Jafari/AFP/Getty Images hide caption

itoggle caption Arya Jafari/AFP/Getty Images

Decontee Davis, 23, initially thought she had malaria when she came down with a fever. It took her more than a week after she got sick to seek treatment for Ebola. John W. Poole/NPR hide caption

itoggle caption John W. Poole/NPR

Children play in the West Point neighborhood of Monrovia last week. West Point has been hit hard by Ebola. So local leaders formed their own Ebola task force, which goes door to door looking for cases. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

Paraguayan government employee Daniel Alonso holds a portrait of Rutherford B. Hayes at the government building in Villa Hayes, the Paraguayan town named after the 19th U.S. president. Hayes is revered for a decision that gave the country 60 percent of its present territory. Jorge Saenz/AP hide caption

itoggle caption Jorge Saenz/AP

Mumadou Traore says the Ivory Coast's French bureaucracy is a "blessing" when it comes to Ebola. Gregory Warner/NPR hide caption

itoggle caption Gregory Warner/NPR

These scuba divers are among the 2 million tourists who visit the Great Barrier Reef each year. They contribute about $5.6 billion to Australia's economy, according to the Queensland government. Steve Dorsey for NPR hide caption

itoggle caption Steve Dorsey for NPR