Space shuttle Atlantis (STS-135) touches down at NASA's Kennedy Space Center Shuttle Landing Facility (SLF) in Cape Canaveral, Florida, completing its 13-day mission to the International Space Station (ISS) and the final flight of the Space Shuttle Program. Overall, Atlantis spent 307 days in space and traveled nearly 126 million miles during its 33 flights. (NASA/Bill Ingalls)

This unprecedented view of the space shuttle Atlantis, appearing like a bean sprout against clouds and city lights, on its way home, is photographed by the Expedition 28 crew of the International Space Station. Airglow over Earth can be seen in the background. (NASA)

An Egyptian boy walks past a picture decorating the pavement in Cairo's landmark Tahrir Square, where activists continue camping out to demand political change as anger grows with the military rulers over the slow pace of reform. (AFP)

Women and girls, caught in a small sandstorm, fetch water in Wajir, Kenya. A wide swath of east Africa, including Kenya and Ethiopia, has been hit by years of severe drought and the United Nations says two regions of southern Somalia are suffering the worst famine for 20 years, with 3.7 million people facing starvation. (Reuters/Jakob Dall/Danish Red Cross/Handout)

A painted activist poses with the victory symbol as he gathers with other supporters for a mass rally organized by the Trinamool Congress Party (TMC) at the Brigade Parade ground in Kolkata, India. The Trinamool Congress recently won state elections and pushed out the the world's longest-serving, democratically elected communist government in India's West Bengal state. (AFP)

Fire fighters hose down a truck that was set ablaze by a bomb blast in Landikotal, northwest Pakistan. Militants blew up a NATO truck carrying fuel for foreign forces fighting Taliban insurgents in Afghanistan, near the border in Pakistan's northwest, security officials said. (Reuters)

Crosses at the 1991 war victims cemetery in Vukovar, Croatia. Serbian authorities arrested Goran Hadzic, accused of war crimes, after eight years being on the run. (AP)

Soldiers of the Chinese People's Liberation Army's honor guard march during a demonstration for visiting media at their military base in Beijing, China. (AP)

Visitors gather in front of the Palace of Versailles, in France. A 2500m2 canvas painted in trompe-l'oeil, right, hides the scaffolds set up for the restoration of the roofing of the XVIIIth century palace. (AP)

Curator Sam Bompas on a boating lake with dyed green water, which forms part of his installation on the roof of the Selfridges department store on Oxford Street, in London. Selfridges will open up its roof to the public, for just the second time since World War II, to host the installation conceived by the artists Bompas & Parr. (AP)

A Japanese tourist couple walks in the world's largest salt flat of Uyuni, 550 Km southwest of La Paz, Bolivia, July 20, 2011. Uyuni has an area of 10,582 square km and is at 3,656 meters above the mean sea level. It is also one of the richest deposits of lithium of the world. (AFP)

Sharon Golan, a graduate design student from the Bezalel Academy of Arts and Design, poses with her design, a pair of modular shoes, at an exhibition in Jerusalem, Israel. Golan's shoes are made up of four separate plastic pieces which are held together on the foot with silicone rubber bands. The design allows the wearer to change looks by replacing any one component of the shoe offering a total of 256 different combinations. (Reuters)

A one-year-old squirrel monkey named Charles Darwin rests on its minder's head during the filming of a TV movie in Berlin, Germany. (AFP)