

A man swims in a polluted pond next to his buffalo on World Environment Day on the outskirts of Jammu, India. According to the United Nations Environment Program website, World Environment Day is celebrated annually to raise global awareness and motivate action for environmental protection. Mukesh Gupta/Reuters
A boy blows a horn as crowds gather to watch Queen Elizabeth returning along The Mall during Diamond Jubilee celebrations in St James Park, London. Neil Hall/Reuters
Sara Errani of Italy reacts after winning her quarter-final match against Angelique Kerber of Germany at the French Open tennis tournament at the Roland Garros stadium in Paris. Regis Duvignau/Reuters
Riot police block opposition supporters during a rally against a draft law on languages, which was scheduled to be discussed during a session in the Ukrainian parliament, near the parliament building in Kiev. Gleb Garanich/Reuters
An ethnic minority student looks up as her classmates take naps on their desks during their lunch break at a primary school in Akqi county of Kizilsu Kirgiz Autonomous Prefecture, Xinjiang Uighur Autonomous Region, China. Reuters
A woman with her children casts her ballot in Milwaukee. Wisconsin Republican Gov. Scott Walker is taking on Democratic challenger Tom Barrett in a recall election. Jeffrey Phelps/AP
Members of a Chinese honor guard prepare for the arrival of Uzbekistan's President Islam Karimov at the Beijing Capital International Airport in Beijing. President Karimov will attend the Shanghai Cooperation Organization summit. Andy Wong/AP
South Korean kindergarten pupils pay their respects to soldiers who died during the 1950-1953 Korean War on the eve of South Korea's Memorial Day at the National Cemetery in Seoul, South Korea. Ahn Young-joon/AP
Mike (r.) and Bob Bryan of the US celebrate winning the men's doubles quarter final match against Olivier Marach of Austria and Horacio Zeballos of Argentina at the French Open tennis tournament in Roland Garros stadium in Paris. Michel Spingler/AP
A Palestinian tattoo artist draws a traditional henna tattoo on a woman's hand in Gaza City, Gaza. Henna tattoos leave a non-permanent image on the skin. Hatem Moussa/AP
US Defense Secretary Leon Panetta receives a photo album of his visit to Vietnam from Gen. Vu Chien Thang upon his departure from Noi Bai International Airport in Hanoi, Vietnam. Jim Watson/AP
Hortencia Wilcox of Allen, Texas, wears a hat signed by Republican presidential candidate, former Massachusetts Gov. Mitt Romney while waiting in line at a campaign stop at Southwest Office Systems in Fort Worth, Texas. Evan Vucci/AP
This citizen journalism image provided by Edlib News Network, ENN, purports to show Syrian rebels gathered on their vehicle in the northern town of Kfar Nebel in Idlib province, Syria. Rebel forces killed scores of Syrian soldiers in the past few days and activists claimed the toll was more than 100 in what appeared to be some of the heaviest losses for government troops since the uprising began 15 months ago. Edlib News Network/AP
Protesters wave Egyptian flags as they gather to protest against presidential candidate Ahmed Shafiq at Tahrir square in Cairo. Asmaa Waguih/Reuters
Bus passengers look at environmental activists wrapped in tree branches while riding a scooter to spread awareness to save trees on World Environment Day in Allahabad, India. Rajesh Kumar Singh/AP
San Diego mayoral candidate and California Assemblyman Nathan Fletcher (l.) shakes hands with another surfer before going surfing on primary election day in San Diego. Fletcher is running as an independent in his bid to become mayor of the nation's eighth-largest city. Gregory Bull/AP
US Navy officers and World War II veterans salute a floral wreath laid at the Battle of Midway Memorial during a ceremony to commemorate the 70th anniversary of the battle, on Midway Atoll. The Battle of Midway, fought in early June 1942 between Japanese and American forces, is widely considered the decisive naval battle of the war in the Pacific. Marco Garcia/Reuters
A cleaner wears a face mask as she works in front of the giant portrait of former Chinese chairman Mao Zedong at Beijing's Tiananmen Gate. The level of air pollution in China's heaving capital varies, depending on the wind, but a cocktail of smokestack emissions, vehicle exhaust, dust and aerosols often blankets the city in a pungent, beige shroud for days on end. David Gray/Reuters
A boy searches for recyclable materials in a dumping site in Allahabad, India. Rajesh Kumar Singh/AP
Georgian Prime Minister Nika Gilauri speaks with US Secretary of State Hillary Rodham Clinton during the opening of the US-Georgia Strategic Partnership Commission in Batumi, Georgia. Clinton on Monday kicked off three days of diplomacy in Europe's Caucasus. Saul Loeb/AP
Australia Wallabies' Nathan Sharpe catches the ball against Scotland's Alastair Kellock during their international rugby union test match in Newcastle, Australia. Daniel Munoz/Reuters
Revelers on the Mall in London watch Queen Elizabeth II appear on the Buckingham Palace balcony as part of the four-day Diamond Jubilee celebrations to mark the 60th anniversary of her accession to the throne. Sang Tan/AP
Workers wash the monument of the famous Russian poet Aleksander Pushkin on the eve of the 213th anniversary of his birth, in St. Petersburg, Russia. Dmitry Lovetsky/AP
Children use cardboard eclipse glasses as they prepare to watch the transit of Venus in Allahabad, India. Stargazers around the world are setting up special telescopes and passing out eclipse glasses to view the once-in-a-lifetime celestial cameo of Venus passing in front of the sun. Rajesh Kumar Singh/AP
A firefighter carries a chainsaw to battle wildfires in the Gila National Forest, N.M. Firefighters battling New Mexico's largest-ever blaze gained ground on Sunday and officials said they would begin to allow evacuated residents to return home. Kari Greer/InciWeb/United States Forest Service/Reuters
Horses make their way onto the track during early morning workouts at Belmont Park in Elmont, N.Y. Shannon Stapleton/Reuters
A Crete Aquarium employee releases sea turtle 'Caretta Caretta' as children watch on World Environment Day in Heraclio city of the island of Crete, Greece. Two sea turtles were released from the aquarium to mark the occasion. Bastian Parschau/AP