PHOTO GALLERY: 24 hours around the world

A baby is carried by his mother during a mourning ceremony to commemorate Hazrat Ali-Asghar, the newborn son of Imam Hussein, at the Imam Khomeini mosque in Tehran October 16, 2015. Mothers take their babies to mourning gatherings in the ceremony, called "Congregation of Hussein's Infants", to commemorate the infants killed in Ashura's battle. (Reuters)

A bridge marks the entrance to the U.S. Army's Fort Benning as the sun rises, Friday, Oct. 16, 2015, in Columbus, Ga. Maj. Lisa Jaster is set to become the third woman to graduate from the US Army’s elite Ranger School, which previously was open only to men. She joins just two other women, Captain Kristen Griest, 26, and First Lieutenant Shaye Haver, 25, in gaining a coveted Ranger tab. (AP Photo)

Hillary Clinton supporter Maria Anita Monzivaiz shows off an image of Clinton cut into her hair style at a "Latinos for Hillary" presidential campaign rally in San Antonio, Texas October 15, 2015 (Reuters)

Magician Lei Xin (R) is seen suspended outside a double-deck bus, next to a woman in a wedding gown, as they participate in a performance on a street in Zhengzhou, Henan province, China, October 15, 2015 (Reuters)

The June 6, 2015 photo provided by Heba Amin shows an Arabic writing translating "we didn’t resist, so he conquered us riding on a donkey; bottom: The situation is not to be trusted; left (AP)

Indigenous people from the Kamayura tribe take a bath in Ipavu lake at the Xingu national park in Mato Grosso, Brazil, October 2, 2015. The Kamayura tribe consists of around 300 people, and is one of the 16 ethnic groups living in the indigenous Xingu national park. Picture taken October 2, 2015 (Reuters)

Members of Iran's Islamic Revolutionary Guard Corps' (IRGC) Aerospace Force salute at an underground missile base with launcher units in an undisclosed location, in this undated handout photo courtesy of Fars News. Iranian state television broadcast footage of an underground tunnel crammed with missiles and launchers on October 14, 2015 (Reuters)