The week's best photojournalism

In some of the week's most striking photos, athletes race in Beijing, lava flows from a volcano, and more 

Ezequiel Lopez and Camila Alegre of Argentina compete at the World Tango Championships, in Buenos Aires. | (AP Photo/Natacha Pisarenko)

Athletes clear a water obstacle during the women's 3,000-meter steeplechase final, at the IAAF World Championships in Beijing, China. | (REUTERS/Damir Sagolj)

Molten lava flows from the Piton de la Fournaise, one of the world's most active volcanoes, on France's Reunion Island in the Indian Ocean. | (REUTERS/Gilles Adt)

Fulton Hotshot Michael Turowski lights a controlled burn on the so-called "Rough Fire," in the Sequoia National Forest, California. | (REUTERS/Max Whittaker)

A Thai veterinarian takes a picture of a 2-year-old orangutan during its health examination at Kao Pratubchang Conservation Center, in Ratchaburi, Thailand. | (REUTERS/Athit Perawongmetha)

Patients from Rady Children's Hospital hug a bottlenose dolphin after being invited to swim at Sea World in San Diego, California. | (REUTERS/Mike Blake)