Youthful morans, or warriors, compete for cash prizes in sports contests rather than hunt lions in a traditional rite of passage, at the Maasai Olympics in Kenya.
White House staff, advisers and government officials who have resigned or been fired under President Donald Trump.
Newsmakers and celebrities who passed away this year.
The current outbreak in Congo is now the second biggest in history, according to WHO and Congo health officials.
A selection of some of our top photos from the United States this year.
Our top environment photos from the past year.
Our top entertainment photos from 2018.
Sinogene, China's first biotech company to provide pet cloning services, made headlines when it successfully cloned a gene-edited beagle last year. A month later, it launched commercial cloning services.
Catriona Gray from the Philippines is crowned Miss Universe, the fourth time the Southeast Asian country has won the international beauty pageant.