Actor George Clooney, center, Rep. Jim Moran, D-Va, back, and Clooney's father, Nick Clooney, right, are arrested during a protest at the Sudanese Embassy in Washington. The demonstrators are protesting the escalating humanitarian emergency in Sudan that threatens the lives of 500,000 people. (AP)

The coffins of victims of the Sierre bus crash are placed in a hangar at Melsbroek military airport in Belgium after returning from Switzerland. Belgian military aircraft began returning home the bodies of 22 children and six adults killed in a bus crash in Switzerland as the country prepared to observe a minute's silence to remember the victims. (Reuters)

El Atazar reservoir near El Berrueco in Madrid's region. Spanish farmers are already on drought alert after the country's driest winter in 70 years. (AFP)

A man raises Apple's new iPad after purchasing it at the 5th Avenue Apple Store in New York. The new iPad went on sale in 10 countries, including the United States, Canada, Singapore, France and Britain. (Reuters)

An old man drags sacks of cotton to be used for quilts to earn his living in Peshawar, Pakistan. (AP)

Thousands of Libyans pray over the coffins of five individuals, who are suspected of being killed in 1984 under the former Moammar Ghadafi regime, during their funeral in Tripoli's Martyrs' Square. The five identified bodies were found amongst other unknown corpses stored in refrigerators at Tripoli Central Hospital. (AFP)

Trash clogs up a polluted canal at the edge of Beijing. China said that two-thirds of its cities currently fail to meet new air-quality standards introduced this week that are based on the pollutants most harmful to health. (AFP)

An Ethiopian migrant waits to be repatriated at a transit center in the western Yemeni town of Haradh, on the border with Saudi Arabia. Some 12,000 migrants, mostly from the Horn of Africa, are stranded in Haradh, which they use as a stepping stone to reach Saudi Arabia, according to the International Organization for Migration. (Reuters)

Joerg Grossmann drives his motorcycle combination with a Kawasaki VN 1500 and a self-developed side car on a road near Usingen, Germany. (AP)

Ethnic Hungarians wearing Hussar outfits take part in a parade on Hungarian's National Day in Targu Secuiesc, north of Bucharest, to mark the 1848 Hungarian Revolution. (AFP)

Al Ahli soccer fans take part in a protest against the ruling military council and interior ministry in front of the general prosecutor's office in Cairo, Egypt. The fans were demanding quick investigations into the deaths of soccer fans at a stadium in Port Said in early February. (Reuters)

Swiss nationals Olivier David Och (L) and Daniela Widmer wave to the media at a military base in Rawalpindi, near Islamabad. The couple kidnapped by the Pakistani Taliban last July say they escaped, a Pakistani army spokesman said, after the two showed up at a military checkpoint on a main road in the northwest of the country. (Reuters)

A girl places flowers in front of the 't Stekske school in Lommel, as she pays her respects to victims of the bus crash in Sierre, Switzerland. A bus carrying a Belgian school group home from a ski trip crashed into the wall of a Swiss tunnel, killing 22 children and six others on Wednesday. (Reuters)

A group of Syrians fleeing violence in their country, walk towards the Turkish border, near Reyhanli. (AP)

Australia's Stephanie Rice swims during the women's 400m Individual Medley final at the 2012 Australian Swimming Championships to qualify for the 2012 London Olympics, in Adelaide. (Reuters)

A worker carries sacks of rice at a warehouse owned by Indonesia's state procurement agency Bulog in Makassar of South Sulawesi province. (Reuters)

Vaduz Castle in Liechtenstein's capital Vaduz. Liechtenstein is located in the Alps between Switzerland and Austria. (Reuters)

US President Barack Obama welcomes British Prime Minister David Cameron during an official arrival ceremony on the South Lawn of the White House in Washington. (AP)

A Chinese military band conductor rehearses before the closing session of the annual National People's Congress held in Beijing's Great Hall of the People. (AP)

A Yemeni woman holds a flower during a demonstration demanding the trial of former president Ali Abdullah Saleh in Sana'a. (AP)

Thousands of ultra Orthodox Jews from the Vizhnitz Hasidic dynasty attend the funeral of their rabbi Moshe Yhoshua Hager, 95, at a cemetery in the central Israeli city of Bnei Brak. (AFP)

Noori, a cloned pashmina goat, stands inside a sheep breeding center at Sher-e-Kashmir University of Agricultural Sciences and Technology in Alastang, some 25 kilometers (15 miles) from Srinagar, India. Scientists at the university successfully cloned the world's first pashmina goat, prized for its fine wool, according to news reports. (AP)

A Somali soldier patrols near the scene of a suicide bombing at a small tea shop inside the Presidential Palace in southern Mogadishu. A suicide bomber killed at least four people inside the presidential palace compound in the Somali capital Mogadishu, according to the police, the African Union and al-Shabaab insurgents. (Reuters)

Occupy Wall Street demonstrators wearing masks of Republican presidential candidate and former Massachusetts Governor Mitt Romney protest outside the Waldorf Astoria Hotel in New York where Romney was holding a fundraiser. (Reuters)

Britain's Camilla (C), Duchess of Cornwall, and Zara Phillips (R) during The Queen Mother Champion Chase at the Cheltenham Festival horse racing meet in Gloucestershire, western England. (Reuters)

A pair of Caribbean flamingos extend their necks during courtship at the Saitama Children's Zoo in Higashimatsuyama, Saitama prefecture, north of Tokyo, Japan. (AFP)

A cleaner sweeps the carpet in front of the honor guard before the official welcoming ceremony of Turkmenistan's President Gurbanguly Berdimuhamedov in Kyiv, Ukraine. (Reuters)

Palestinians take cover as a gunman fires a weapon in the air during the funeral of Islamic Jihad militant Mohammed Daher in Gaza City. (Reuters)

A single voter contemplates her choices at this voting precinct in Madison, Mississippi, USA. Mississippi and Alabama hold primaries and their results could clarify the GOP presidential nomination race. (AP)

Bank security guards on strike march demanding better wages in downtown Rio de Janeiro, Brazil. (AFP)

Bangladeshis ride past the site of a ferry accident, on the Meghna River in Munshiganj district, about 32 kilometers (20 miles) south of Dhaka. A ferry packed with about 200 people capsized in the river, killing more than 30 people and leaving dozens more missing, authorities said. (AP)

A South Korean activist wearing mask depicting a cluster munition near the Foreign Ministry in Seoul, South Korea, during a campaign to ban land mine and cluster munitions in Cambodia. (AP)

Syrian refugees in the Hacipasa Refugee Camp in Antakya, near the Turkish-Syrian border. (AFP)

A burned sandal in Rida mosque which has been set on fire in Anderlecht commune in the west of Brussels, Belgium. A man threw a petrol bomb through the window of the mosque, killing the imam and injuring a second person, Belgian newspaper La Derniere Heure reported. (Reuters)

French Socialist Party candidate for the 2012 presidential elections Francois Hollande delivers a speech as he campaigns in Valence, southern France. (AP)

Nissan's new Deltawing race car after it was unveiled in London. The experimental race car to be powered by Nissan 1.6-litre DIG-T engine will be a non-competitive participant in this year's Le Mans 24 hour race. (Reuters)