Today in Pictures: June 21

Holly Lincoln-Smith and Nicola Zagame pose during an Australian women's Olympic water polo team portrait session at the Olympic Park Aquatic Centre in Sydney.

U.S. Customs and Border Patrol Officer Constantino Zarate tries to herd an emu off the highway as a wildfire continues to burn north of the Mexican border near Potrero, California.

People gather to see the sun rise at the ancient Stonehenge site, during the summer solstice, on the longest day of the year in Wiltshire, United Kingdom.

Andean religious leaders perform a New Year's ritual in the ruins of the ancient city of Tiwanaku, Bolivia. The country's Aymara Indians are celebrating the year 5,524 as well as the Southern Hemisphere's winter solstice, which marks the start of a new agricultural cycle. 

Indian pedestrians balance baskets on their heads as they wade through a flooded street after heavy monsoon rain showers in Mumbai. 

A resident attempts to extinguish a fire after South African rioters blocked roads, looted shops and burned property in several areas of the country's capital, Pretoria, in a show of anger over the selection of the ruling party's mayoral candidate ahead of local elections. 

Palestinian flags decorate the rubble of a house belonging to a Palestinian man who carried out a knife attack in Tel Aviv after it was demolished by Israeli security forces in the village of Haja, in the Israeli-occupied West Bank.

People celebrate the summer solstice at the Kokino megalithic observatory, near the city of Kumanovo, Macedonia. 

A giant panda named Ya Li gave birth to twins in Chengdu, Sichuan Province, China. They are the first giant panda twins of 2016 anywhere in the world. 

A Los Angeles County fire helicopter makes a night drop while battling the Fish Fire above Azusa, California.