Thousands of fireflies dance around Aurora Ghizzi Panizza, age 4, in the grounds of the 15th-century Castello di Torrechiara in Parma, Italy on July 16, 2022. (Photo by Alberto Ghizzi Panizza/Animal News Agency)

Shiite Muslim pilgrims march with banners towards the shrine city of Karbala ahead of the Arbaeen commemorations that mark the end of the 40-day mourning period for the seventh century killing of the Prophet Mohamed's grandson Imam Hussein ibn Ali, in the city of Nasiriyah in Iraq's southern Dhi Qar province on August 14, 2024. (Photo by Asaad Niazi/AFP Photo)

Nick Franklin, in action during the FMX competition at the 23rd edition of Free4Style this Saturday, July 2, 2016 in Estavayer-le-Lac,Switzerland. (Photo by Jean-Christophe Bott/Keystone/APA)

A pair of heels are left on a chair as a place holder at the 22nd Screen Actors Guild Awards in Los Angeles, California January 30, 2016. (Photo by Lucy Nicholson/Reuters)

A rescuer saves a resident from a flooded area in Wuhan, Hubei Province, China, July 2, 2016. (Photo by Reuters/China Daily)

Each year Nikon Small World recognizes the excellence of photography taken under the microscope. The contest showcases the beauty and complexity of life. Anyone interested in microscopy and photography can enter the contest and in its 42nd year, Nikon Small World received 2,000 entries from 70 countries. Here: 11th Place; Scales of a butterfly wing underside (Vanessa atalanta). (Photo by Francis Sneyers/Nikon's Small World 2016)

In Omdurman, the largest city in Sudan, the Qadiriyya Sufi order meets every Friday outside Sheikh Hamed Al Nil mosque, which houses the tomb of their 19th century Sufi leader. (Photo by Ala Kheir, John Burns and Ibrahim Algrefwi/Brownbook)