Kamchatka Brown Bear Mascha and her three-month old bears Wanja and Misho are pictured in Hagenbecks zoo in Hamburg, northern Germany. Fabian Bimmer/Reuters
Armed rebel fighters are seen inside a building during Friday prayers in central Ajdabiyah, Libya. Some 2,000 people turned up for weekly Muslim prayers in the city's main square, including many residents who had fled after the uprising against Qaddafi that began on Feb. 17. Yannis Behrakis /Reuters
A woman attends a rally demanding the ouster of Yemen's President Ali Abdullah Saleh in the southern city of Taiz. Vast crowds took to the streets to demand the immediate ouster of President Ali Abdullah Saleh, instead of the phased handover of power envisaged by a Gulf Arab plan to be signed in two days. The word on the veil reads: 'Leave!' Khaled Abdullah/\Reuters
President Barack Obama and First Lady Michelle Obama tour tornado damage in Tuscaloosa, Ala. Charles Dharapak/AP
People wait in line to enter a government job center in Malaga, southern Spain. Spain's unemployment rate rose to 21.3 percent in the first quarter of this year, data from the National Statistics Institute showed, its highest level in fourteen years. Jon Nazca/Reuters
Models dressed in costumes perform during the opening ceremony of the Chaoyang International Pop Music Festival in Beijing. AP
A Thai child who fled clashes between Thai and Cambodian soldiers smiles under drawings by refugee children at an evacuation center in Surin province, northeastern Thailand. A brief cease-fire between the two countries broke down, shattering hopes for a quick end to the border conflict as the two sides exchanged fire for an eighth day. Wason Wanichakorn/AP
Supporters of Singapore's opposition Worker's Party watch from behind barricades during a rally. The ruling People's Action Party has dominated Singapore politics for more than five decades, but opponents hope to exploit voter discontent over soaring housing prices, a surge in foreign workers, and rising income inequality. Wong Maye-E/AP
Miki Ando of Japan performs during the ladies short program event at the ISU World Figure Skating Championships in Moscow. Sergei Karpukhin/Reuters
A figurine of Pope John Paul II is displayed in a religious shop in Rome. As the Vatican prepares to elevate the late pontiff one step closer to sainthood this Sunday, the Catholic world is caught up with beatification fever. Rome is festooned with posters of the former pope on buses and lamp posts as the city where he was bishop for 27 years awaits one of the largest crowds since his funeral in 2005, when millions came to pay tribute. Alessia Pierdomenico/Reuters
The Tungurahua Volcano spews ash and stones during an eruption as seen from Cotalo, Ecuador. The volcano some 85 miles southeast of Quito, has been active since 1999. Dolores Ochoa/AP
Russia's President Dmitry Medvedev (l.) gives flowers to high school teacher Tatyana Viktorova after presenting her the 'Honored Teacher of Russia' award during a ceremony in Moscow's Kremlin. Natalia Kolesnikova/Reuters
Marc Landry and Lindsay Coxe of Norwich, Conn. pose on a runway in Times Square in New York after exchanging vows shortly after the wedding of Prince William and Kate Middleton. Mark Lennihan/AP
Britain's Prince William and his bride Catherine, Duchess of Cambridge, leave Westminster Abbey, London, following their wedding. Tom Hevezi/AP
Beijing's Grain-for-Green program has helped blanket the country's hillsides with trees, undoing damage from decades of blistering development. But fostering biodiversity remains a challenge, conservationists say.
Standing on a hillside, Liu Minfang looks down at the lush landscape that surrounds her home in the remote mountains of southwestern China. Terraced slopes that farmers once used for growing crops are now filled with cedar trees and bamboo. A waterfall cascades down a distant cliff. In the valley below, a muddy river flows through a patchwork of rapeseed fields and rice paddies.