A baby elephant eats at an elephant camp in Bago, Myanmar. | (REUTERS/Ann Wang)

A visitor at an optical illusion exhibit in Augustusburg, Germany. | (AP Photo/Jens Meyer)

A demonstrator holds a flare in Mexico City. | (AP Photo/Ginnette Riquelme)

A protester hits a tear gas canister with a tennis racket in Hong Kong. | (REUTERS/Tyrone Siu)

An officer guards a secure area at the Capitol in Washington, D.C. | (AP Photo/Jose Luis Magana)

An injured runner lies on the track at the track and field world championships in Doha, Qatar. | (AP Photo/Petr David Josek)

A high jumper lands at the world championships in Doha. | (REUTERS/Aleksandra Szmigiel)

A demonstration of a diving capsule in Moorea, French Polynesia. | (FRANCK GAZZOLA/ZEPPELIN/SIPA/Shutterstock)

The Aurora Borealis over Lapland, Finland. | (REUTERS/Alexander Kuznetsov)

A sign covered by high tide in Bosham, England. | (Peter MacDiarmid/Shutterstock)

The moon over a mosque in Doha. | (ALI HAIDER/EPA-EFE/Shutterstock)

An art exhibit on urbanization in Kolkata, India. | (PIYAL ADHIKARY/EPA-EFE/Shutterstock)

**See last week's best photojournalism**