Usain Bolt of Jamaica competes in the men's 100-meter semifinal in the 2016 Olympics in Rio de Janeiro, Brazil.
(Cameron Spencer/Getty Images)
A boy drinks milk during a parade to mark the Gaijatra festival, also known as "cow festival," in Kathmandu, Nepal.
A woman walks through a rain shower in Beijing, China.
(AP Photo/Mark Schiefelbein)
Gold medal winner Brianna Rollins, center, silver medal winner, Nia Ali, right, and bronze medal winner Kristi Castlin, all from the United States, celebrate their wins after crossing the finish line of the 100-meter hurdles final at t
(AP Photo/Lee Jin-man)
A bridge collapse over the Tolten River in Pitrufquen village, Chile.
A casket floats in flood waters in Ascension Parish, Louisiana.
Sheep gather in Al Wazzani, in southern Lebanon.
Margarita Mamun of Russia competes in rhythmic gymnastics at the Rio Olympics.
People cool off at a swimming pool in Sichuan Province, China.
(China Daily/via REUTERS)
American Jordan Burroughs and Russian Aniuar Geduev compete in the Olympic men's wrestling quarterfinal.
A helicopter drops water while battling the Blue Cut fire burning near Cajon Blvd in San Bernardino, California .
Synchronized swimmers from Egypt compete in the Rio Olympics.
(REUTERS/Michael Dalder)**Check out last week's best photojournalism.**