An African tortoise moves across pavement outside the Washington State University veterinary teaching hospital on Thursday, July 21 in Pullman Wash. The artificial limb put on the tortoise at didn't come from a high tech prosthetics lab. It came from an Ace Hardware store. The caster style wheel cost around $7, according to the two veterinarians who installed it on the tortoise after amputating a damaged front leg.

Students eat their lunch inside a classroom constructed from mud and old cement bags at the Aman Setu school in Pune on Wednesday. , about 118 miles from Mumbai, on Wednesday, July 20.

Students play at the window of a classroom constructed from mud, old cement bags and recycled wood at the Aman Setu school in Pune on Wednesday.

A student wearing a pink dress enters a classroom through a miniature door constructed specially for children at the Aman Setu school in Pune on Wednesday.

Children sit on cloth mats as they study inside a classroom constructed from mud and old cement bags at the Aman Setu school in Pune on Wednesday.

Students walk on a garden pathway past a classroom constructed from mud and old cement bags at the end of the school day at the Aman Setu school in Pune on Wednesday.

BMC team rider Cadel Evans of Australia, Europcar team rider Thomas Voeckler of France, Europcar team rider Pierre Rolland of France, Liquigas-Cannondale team rider Ivan Basso of Italy, cycle in the Alps during the 18th stage of the Tour de France cycling race between Pinerolo in Italy and Col du Galibier, France, 21 July 2011.

Luxembourg's fans cheer on stage winner Luxembourg's Andy Schleck climbing Galibier pass (2.645 meters) in the 200,5 km and eighteenth stage of the 2011 Tour de France cycling race run between Pinerolo and Galibier Serre-Chevalier ski resort on July 21, 2011. This year is the celebratation of the centenary of the first crossing of the Galibier pass by a cyclist on July 1911 during the Chamonix/Grenoble stage of the Tour.

Johnny Hoogerland of The Netherlands sprays himself with water as he climbs Izoard pass during the 18th stage of the Tour de France cycling race over 200.5 kilometers (124.6 miles) starting in Pinerolo, Italy, and finishing on Galibier pass, Alps region, France, Thursday July 21, 2011.

Europcar rider Thomas Voeckler of France reacts at the finish line during the 18th stage of the Tour de France 2011 cycling race from Pinerolo to Le Galibier-Serre Chevalier July 21, 2011. Voeckler, who finished fifth, keeps the leader's jersey.

Space shuttle Atlantis lands at Kennedy Space Center, Florida, July 12, 2011. The Atlantis landing marked the end of the space shuttle era when its wheels touched down for the last time at the Kennedy Space Center. "After serving the world for over 30 years, the space shuttle has earned its place in history. It‘s come to a final stop," Atlantis commander Chris Ferguson said.

Space shuttle Atlantis lands at the Kennedy Space Center in Cape Canaveral, Florida, July 21, 2011. The space shuttle Atlantis glided home through a moonlit sky for its final landing at the Kennedy Space Center in Florida on Thursday, completing a 30-year odyssey for NASA's shuttle fleet.

Johnson Space Center employees Shelley Stortz. lelft, and Jeremy Rea, right, hold hands as they watch space shuttle Atlantis land Thursday, July 21, 2011, in Houston.

A man inspects measures the depth of a sinkhole in Guatemala City on July 19.

A man inspectas a sinkhole formed in a house on July 19, 2011 in the north of Guatemala City. When neighbors heard the loud boom overnight they thought a cooking gas canister had detonated. Instead they found a deep sinkhole the size of a large pot inside a home in a neighborhood just north of Guatemala City. The sinkhole was 12.2 meters (40 feet) deep and 80 centimeters (32 inches) in diameter, an AFP journalist who visited the site reported. Police, members of the country's natural disaster office and water utility company officials came to visit the site. Sinkholes, formed by the natural process of erosion, can be gradual but are often sudden.

Guatemala City, built on volcanic deposits, is especially prone to sinkholes, often blamed on a leaky sewer system or on heavy rain. AFP PHOTO / Johan ORDONEZ (Photo credit should read JOHAN ORDONEZ/AFP/Getty Images)

Event curators Harry Parr, left, and Sam Bompas sit in paddle boats in the Truvia Voyage of Discovery installation on the roof of Selfridges department store in London, England, on July 21. Selfridges is opening its roof to the public for only the second time since WWII to host the installation, which includes a boating lake with dyed water and bar.

A child lies on a beach mattress as "Paris Plages" (Paris Beaches) opens along the banks of the Seine river in Paris, France on July 21. Paris Plages, the yearly transformation of a section of the Seine river into a man-made beach, opened today for its 10th anniversary and will run from July 21 to August 21 with the aim of bringing the beach atmosphere to the French capital.

Space Shuttle Atlantis lands at Kennedy Space Center on July 21 in Cape Canaveral, Florida, ending the 30 year shuttle program.

Enforcement officers watch a woman, right, protesting against the demolition of a group of illegal buildings in Wuhan on July 20.

A law enforcement officer stands guard during a mission to demolish illegally built shelters on a former dump site in Wuhan on July 20. The city plans to demolish illegal buildings at over 200 sites this month to kick off a facelifting "revolution of urban administration" which will last through 2013.

A fisherman gives an explosive device to his fellow outside the rebel-held town of Benghazi, Libya on July 20. Libyan fishermen use dynamite as one of the easiest ways since the country is flooded with explosives from four months of fighting between rebels and Libyan dictator Gadhafi's forces.

A fisherman with an improvised explosive device searches for fish on July 20.

The underwater blast from the explosive used for fishing.