Stuntman Akis Andreou, 38, balances on a motorcycle with the engine running, outside the "Wall of Death", a barrel-shaped wooden structure where he performs acrobatics in the village of Mandoudi, northeast of Athens September 26, 2013. Andreou has been performing stunts since he was 17 and in 2006 set up the Wall of Death, a narrow wooden barrel 5.5 metres high and 9 meters wide. Andreou, one of the few remaining performers of such motorcycle stunts in Greece and one of only two owners of these barrels, does other odd jobs to earn a living during winter, when the Wall is closed due to weather conditions. Picture taken September 26, 2013. REUTERS/John Kolesidis (GREECE - Tags: ENTERTAINMENT SOCIETY SPORT MOTORSPORT) 

A woman cries as she waits for news of her relative, a garment worker who is still missing, after the collapse of the Rana Plaza building in Savar, outside Dhaka May 3, 2013. Police investigating the collapse of a Bangladesh factory building that killed more than 500 people have arrested an engineer who warned the day before that the eight-storey complex was unsafe. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER TPX IMAGES OF THE DAY) 

A university student runs away from tear gas in front of a dormitory, during a protest against higher enrolment fees, at Cheikh Anta Diop University in Dakar, April 9, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 9, 2013. To match AFRICA-SUMMIT/SKILLS REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION CIVIL UNREST BUSINESS) 

A university student throws a stone during a protest against higher enrolment fees at Cheikh Anta Diop University, in Dakar April 9, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 9, 2013. To match AFRICA-SUMMIT/SKILLS REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION CIVIL UNREST BUSINESS) 

A university student chants a slogan during a protest against higher enrolment fees at Cheikh Anta Diop University, in Dakar April 9, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 9, 2013. To match AFRICA-SUMMIT/SKILLS REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION CIVIL UNREST BUSINESS) 

Friends gather in a dorm room originally designed for one person but which is currently shared by four, at Cheikh Anta Diop University in Dakar, April 10, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 10, 2013. To match AFRICA-SUMMIT/SKILLS/ REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION BUSINESS TPX IMAGES OF THE DAY) 

Students hang out on the steps of a university building during a strike at Cheikh Anta Diop University, in Dakar April 10, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 10, 2013. To match AFRICA-SUMMIT/SKILLS REUTERS/Joe Penney (SENEGAL - Tags: EDUCATION POLITICS BUSINESS) 

Students walk on campus at Cheikh Anta Diop University in Dakar, April 9, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 9, 2013. To match AFRICA-SUMMIT/SKILLS REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION BUSINESS) 

Friends gather in a dorm room originally designed for one person but which is currently shared by four, at Cheikh Anta Diop University in Dakar, April 10, 2013. Despite increasingly high demand in Africa for skills in manufacturing, engineering, agriculture, retail and hospitality, graduates in these fields were scarce. Once the top institution in West Africa, Cheikh Anta Diop University is slowly introducing reforms despite a lack of financial resources and crippling strikes by students and lecturers over poor working conditions, often ending in clashes with police. It launched a civil engineering course this year, partnering with firms such as France's Eiffage, the curriculum structured jointly by company executives and lecturers. But Saliou Ndiaye, rector of Cheikh Anta Diop University, said applying the reforms across the sprawling university will take time, with 65,500 students crowded into facilities built for just 5,000. Picture taken April 10, 2013. To match AFRICA-SUMMIT/SKILLS/ REUTERS/Joe Penney (SENEGAL - Tags: POLITICS EDUCATION BUSINESS) 

The San Francisco Bay Bridge is pictured in San Francisco, California on January 7, 2013, with the Golden Gate Bridge at bottom right. REUTERS/Noah Berger (UNITED STATES - Tags: TRANSPORT BUSINESS CONSTRUCTION) 

(From L-R) Hugo Aristegui, Marta Alvarez, Olatz Canovas and Sara Basaguren, second year engineering students at the Basque Country University (UPV) place paving stones on a model bridge during the eleventh "Model Bridge with Ice Cream Sticks" competition in Bilbao April 19, 2012. Bridges constructed from ice cream sticks and wood glue are laden with weights to test their strength until they break. The students' model bridge beat last year's record of 702 kg by over a hundred kg, and judges decided to maintain the structure without it breaking. REUTERS/Vincent West (SPAIN - Tags: SOCIETY BUSINESS CONSTRUCTION EDUCATION) 

A model bridge constructed by engineer Pablo Cearra breaks during the eleventh "Model Bridge with Ice Cream Sticks" competition in Bilbao April 19, 2012. Bridges constructed from ice cream sticks and wood glue are laden with weights to test their strength until they break. Eight times winner Cearra's structure supported a record breaking 909 kg before breaking. REUTERS/Vincent West (SPAIN - Tags: SOCIETY BUSINESS CONSTRUCTION) 

Engineer Andrea Faccioli monitors, using a laser scanner, the movement of the structure of the Costa Concordia cruise ship which ran aground off the west coast of Italy at Giglio island January 19, 2012. No deadline has been set for ending the search for missing people on the wreck of the Italian cruise liner that capsized off the Tuscan island, the chief spokesman of the firefighters said on Thursday. REUTERS/Giampiero Sposito (ITALY - Tags: DISASTER TRANSPORT) 

Scott Hart, Washington State Department of Transportation assistant project engineer, secures a fence of the now-closed Alaskan Way Viaduct, a major Seattle arterial road along the downtown corridor on October 22, 2011. The 1950s-vintage highway which sees more than 90,000 vehicles a day, was closed on October 21 as workers begin to demolish the earthquake-damaged structure. Puget Sound residents are struggling to find alternate work-commute routes during the closure to avoid metropolitan gridlock. REUTERS/Anthony Bolante (UNITED STATES - Tags: CITYSPACE TRANSPORT ENVIRONMENT) 

A civil engineer exits through the access panel atop the Washington Monument pyramidion, the tallest structure, standing 555 feet 5+1/8 inches (169.294 meters), in Washington, September 29, 2011. Engineers have been making thorough inspections of the monument for any damages from the 5.8 magnitude August 23rd Virginia earthquake that hit the east coast. REUTERS/Hyungwon Kang (UNITED STATES - Tags: DISASTER) 

A civil engineer exits through the access panel atop the Washington Monument pyramidion, standing 555 feet 5+1/8 inches (169.294 meters) the tallest structure in Washington, September 29, 2011. Engineers have been making thorough inspections of the monument for any damages from the 5.8 magnitude August 23rd Virginia earthquake that hit the east coast. REUTERS/Hyungwon Kang (UNITED STATES - Tags: DISASTER) 

Three engineers from Wiss, Janney, Elster Associates, Inc. rappel at the top of the Washington Monument checking for structural damage from last month's 5.8-magnitude earthquake that struck the national capital region and Washington, September 28, 2011. REUTERS/Larry Downing (UNITED STATES - Tags: DISASTER SOCIETY) 

Three engineers from Wiss, Janney, Elster Associates, Inc. rappel on the Washington Monument looking for structural damage from last month's 5.8-magnitude earthquake that struck the national capital region and Washington, September 28, 2011. REUTERS/Larry Downing (UNITED STATES - Tags: DISASTER SOCIETY) 

Three engineers from Wiss, Janney, Elster Associates, Inc. rappel on the Washington Monument checking for structural damage from last month's 5.8-magnitude earthquake that struck the national capital region and Washington, September 28, 2011. REUTERS/Larry Downing (UNITED STATES - Tags: DISASTER SOCIETY) 

A worker prepares rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011.
Engineers plan to rappel down the 555-foot (170-metre) Washington Monument to assess damage from a rare 5.8-magnitude earthquake and storms that struck the U.S. capital last month. REUTERS/Kevin Lamarque (UNITED STATES) BEST QUALITY AVAILABLE 

Workers prepare rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011. Engineers plan to rappel down the 555-foot (170-metre) Washington Monument to assess damage from a rare 5.8-magnitude earthquake and storms that struck the U.S. capital last month. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY DISASTER) 

A worker prepares rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011. Engineers plan to rappel down the 555-foot (170-metre) Washington Monument to assess damage from a rare 5.8-magnitude earthquake and storms that struck the U.S. capital last month. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY DISASTER) 

A worker prepares rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011. Engineers plan to rappel down the 555-foot (170-metre) Washington Monument to assess damage from a rare 5.8-magnitude earthquake and storms that struck the U.S. capital last month. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY DISASTER TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GM1E7BI1PTO01. 

A worker prepares rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011. Engineers plan to rappel down the 555-foot (170-metre) Washington Monument to assess damage from a rare earthquake and storms that struck the U.S. capital on August 23. The monument, finished in 1884, sustained cracks more than an inch wide during the 5.8-magnitude earthquake, with water from Hurricane Irene and summer storms seeping in and causing damage, according to the National Park Service. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY DISASTER) 

A worker prepares rappelling lines at the top of the Washington Monument as inspections to the structure begin September 27, 2011. Engineers plan to rappel down the 555-foot (170-m) Washington Monument to assess damage from a rare earthquake and storms that struck the U.S. capital on August 23. The monument, finished in 1884, sustained cracks more than an inch wide during the 5.8-magnitude earthquake, with water from Hurricane Irene and summer storms seeping in and causing damage, according to the National Park Service. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY DISASTER) 

Fire crew work where a building collapsed onto a street and bus on the corner of 125th Street and Frederick Douglass Boulevard in Harlem, New York September 20, 2011. Seventeen people were injured and fire officials said the injuries were minor and not life-threatening, local media reported. REUTERS/Andrew Kelly (UNITED STATES - Tags: DISASTER TPX IMAGES OF THE DAY) 

The west-facing side of the Washington Monument is photographed the day after an earthquake shook the east coast and damaged one of the stones at the top of the monument, in Washington August 24, 2011. Structural engineers are expected to make further assessments on Wednesday and the monument remains closed until further notice, a National Park Service spokesman said. REUTERS/Molly Riley (UNITED STATES - Tags: DISASTER) 

The west-facing side of the Washington Monument is photographed the day after an earthquake shook the east coast and damaged one of the stones at the top of the monument, in Washington August 24, 2011. Structural engineers are expected to make further assessments on Wednesday and the monument remains closed until further notice, a National Park Service spokesman said. REUTERS/Molly Riley (UNITED STATES - Tags: DISASTER) 

The west-facing side of the Washington Monument is photographed the day after an earthquake shook the east coast and damaged one of the stones at the top of the monument, in Washington August 24, 2011. Structural engineers are expected to make further assessments on Wednesday and the monument remains closed until further notice, a National Park Service spokesman said. REUTERS/Molly Riley (UNITED STATES - Tags: DISASTER) 

The Washington Monument remains blocked off by fencing the day after an earthquake shook the east coast and damaged one of the stones at the top of the monument, in Washington August 24, 2011. Structural engineers are expected to make further assessments on Wednesday and the monument remains closed until further notice, a National Park Service spokesman said. REUTERS/Molly Riley (UNITED STATES - Tags: DISASTER) 

Security guards stand at the base of the Washington Monument blocked off by fencing the day after an earthquake shook the east coast and damaged one of the stones at the top of the monument, in Washington August 24, 2011. Structural engineers are expected to make further assessments on Wednesday and the monument remains closed until further notice, a National Park Service spokesman said. REUTERS/Molly Riley (UNITED STATES - Tags: DISASTER) 

Joplin Fire Department engineer John Miles stands in front of a new engine in Joplin, Missouri August 17, 2011. Residents are still recovering and rebuilding from a devastating tornado that ripped through Joplin, in late May, killing nearly 160 people and destroying more than 8,000 homes and other structures. Miles' station was destroyed and he and his crew rode out the tornado in their former station, which also destroyed their apparatus. They are now in a temporary station adjacent the site of their former station and a fire engine manufacturer is leasing them two rigs for 18 months for one dollar. REUTERS/Eric Thayer (UNITED STATES - Tags: DISASTER ENVIRONMENT) 

James Spithill (L), skipper for Oracle Racing, speaks along with Russell Coutts (2nd L), CEO of Oracle Racing, John Kostecki (3rd L), tactician for Oracle Racing, Kurt Jordan (2nd R), structural engineer for Oracle Racing, and Dirk Kramers (R), design team member for Oracle Racing, during a news conference for the 34th Annual America's Cup at the Golden Gate Yacht Club in San Francisco June 13, 2011. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT YACHTING) 

James Spithill (L), skipper for Oracle Racing, speaks along with Russell Coutts (2nd L), CEO of Oracle Racing, John Kostecki (3rd L), tactician for Oracle Racing, Kurt Jordan (2nd R), structural engineer for Oracle Racing, and Dirk Kramers (R), design team member for Oracle Racing, during a news conference for the 34th Annual America's Cup at the Golden Gate Yacht Club in San Francisco June 13, 2011. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT YACHTING) 

Kurt Jordan, structural engineer for Oracle Racing, speaks during a news conference for the 34th Annual America's Cup at the Golden Gate Yacht Club in San Francisco June 13, 2011. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT YACHTING) 

A labourer works on a steel structure at a financial building construction site, as the cityscape is seen amid smoke from burning straw, in Hefei, Anhui June 3, 2011. Growing evidence that China's roaring economy is starting to slow has fed an investor debate about whether the world's growth engine is gently easing or headed for a sharp downturn. REUTERS/Stringer (CHINA - Tags: BUSINESS EMPLOYMENT CONSTRUCTION IMAGES OF THE DAY) 

Nissan Motor's Iwaki factory is seen in Iwaki, about 50km (31 miles) from the crippled Fukushima Daiichi nuclear power plant, Fukushima prefecture May 17, 2011. Employees at Nissan Motor Co are working hard to restore quake-hit production at Japan's No.2 automaker to full levels before its October target, although such an early recovery may be hard to achieve, Chief Executive Carlos Ghosn said on Tuesday. The Iwaki factory, which builds 2.5 to 3.7-liter engines for the Fuga, Murano, Infiniti M, and other models, marked its return to full production capacity on Tuesday after suffering damage to its equipment and structure from the magnitude-9.0 earthquake on March 11. REUTERS/Chang-Ran Kim (JAPAN - Tags: TRANSPORT DISASTER BUSINESS) 

Nissan Chief Executive Carlos Ghosn speaks to the media as he visits the company's Iwaki factory in Iwaki, about 50km (31 miles) from the crippled Fukushima Daiichi nuclear power plant, Fukushima prefecture May 17, 2011. Employees at Nissan Motor Co are working hard to restore quake-hit production at Japan's No.2 automaker to full levels before its October target, although such an early recovery may be hard to achieve, Ghosn said on Tuesday. The Iwaki factory, which builds 2.5 to 3.7-liter engines for the Fuga, Murano, Infiniti M, and other models, marked its return to full production capacity on Tuesday after suffering damage to its equipment and structure from the magnitude-9.0 earthquake on March 11. REUTERS/Chang-Ran Kim (JAPAN - Tags: TRANSPORT DISASTER BUSINESS) 

Nissan Motor's Iwaki factory is seen in Iwaki, about 50km (31 miles) from the crippled Fukushima Daiichi nuclear power plant, Fukushima prefecture May 17, 2011. Employees at Nissan Motor Co are working hard to restore quake-hit production at Japan's No.2 automaker to full levels before its October target, although such an early recovery may be hard to achieve, Chief Executive Carlos Ghosn said on Tuesday. The Iwaki factory, which builds 2.5 to 3.7-liter engines for the Fuga, Murano, Infiniti M, and other models, marked its return to full production capacity on Tuesday after suffering damage to its equipment and structure from the magnitude-9.0 earthquake on March 11. REUTERS/Chang-Ran Kim (JAPAN - Tags: TRANSPORT DISASTER BUSINESS) 

Visitors look at the internal structure and engine of the Prius model at the Toyota showroom in Tokyo February 7, 2010. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: TRANSPORT BUSINESS) 

Engineers check the structure of a building adjacent to a five-storey residential building which collapsed in Hong Kong January 29, 2010. At least one body was found dead with two others injured. REUTERS/Bobby Yip (CHINA - Tags: DISASTER) 

An employee works at a shipbuilding factory in Wuwei county, Anhui province, July 2, 2009. New ship orders received by Chinese shipbuilding enterprises kept shrinking from January to May. Shipbuilders only received 1.18 million dwt of new ship orders in the first five months, plunging 96 percent from one year prior, Xinhua news agency reported. REUTERS/Jianan Yu (CHINA BUSINESS CONSTRUCTION IMAGES OF THE DAY) 

An aerialist from The Dream Engine of England performs inside the Diamond, an air-filled 11-meter tall transparent structure, at the Merlion Park during the Singapore Arts Festival May 31, 2009. Reuters/Rina Ota (SINGAPORE ENTERTAINMENT SOCIETY) 

An aerialist from The Dream Engine of England performs inside the Diamond (R), an air-filled 11-meter tall transparent structure, at the Merlion Park during the Singapore Arts Festival May 31, 2009. Reuters/Rina Ota (SINGAPORE ENTERTAINMENT SOCIETY) 

An aerialist from The Dream Engine of England performs inside the Diamond, an air-filled 11-meter tall transparent structure, at the Merlion Park during the Singapore Arts Festival May 31, 2009. Reuters/Rina Ota (SINGAPORE ENTERTAINMENT SOCIETY) 

Members of the emergency services gather near to the collapsed building of the town archive of the German city of Cologne, March 3, 2009. More than 200 rescue workers rushed to the scene in the south of the city after the collapse of the multi-storey building, which German media said may have been sparked by work on an underground train line. At least one person was injured and possibly others are trapped inside, a Cologne police spokesman said, adding the cause for the collapse was still unclear. In background is Cologne Cathedral. REUTERS/Ina Fassbender (GERMANY) 

A combination of three pictures shows structural engineer Ruediger S., construction engineer Walter G. and architect Rolf R. (L-R) in the southern German village of Traunstein November 18, 2008.The three engineers are accused in connection with the accident at an ice skating rink in Bad Reichenhall on January 2, 2006 where fifteen people, most of them children, were killed after the roof collapsed in amid heavy snowfall. REUTERS/Michael Dalder (GERMANY) 

Files are pictured in a courtroom before a verdict in the trial against construction engineer Walter G., structural engineer Ruediger S. and architect Rolf R. in the southern German village of Traunstein November 18, 2008. The three engineers are accused in connection with the accident at an ice skating rink in Bad Reichenhall on January 2, 2006 where fifteen people, most of them children, were killed after the roof collapsed in amid heavy snowfall. REUTERS/Michael Dalder (GERMANY) 

Alan Shaffer, acting director, Defense, Research and Engineering in the office of Acquistion, Logistics and Technology in the office of the Secretary of Defense is interviewed in front of a Net Zero Plus facility at the Army National Training Center in Fort Irwin, California July 31, 2008. The dome structure is composed of concrete and foam insulation which is powered by both a solar and wind energy generated by self-contained photo-voltaic cells and two wind turbines at the unit. The U.S. military has a history of fostering change, from racial integration to development of the Internet. Now, Pentagon officials say their green energy efforts will help America fight global warming.
Picture taken July 31, 2008. REUTERS/Fred Prouser (UNITED STATES) 

Dr. Thomas Heaton, professor of engineering & seismology, Caltech, speaks during a news conference at the California Institute of Technology in Pasadena, California July 29, 2008 after a magnitude 5.4 earthquake in Southern California centered in the Chino Hills area. The earthquake struck east of Los Angeles on Tuesday and was felt hundreds of miles south to the Mexican border and east to Las Vegas, but there were no reports of injuries, major structural damage or power outages. REUTERS/Phil McCarten (UNITED STATES) 

Dr. Thomas Heaton (L), professor of engineering & seismology, Caltech, speaks during a news conference at the California Institute of Technology in Pasadena, California July 29, 2008 after a magnitude 5.4 earthquake in Southern California centered in the Chino Hills area. The earthquake struck east of Los Angeles on Tuesday and was felt hundreds of miles south to the Mexican border and east to Las Vegas, but there were no reports of injuries, major structural damage or power outages. REUTERS/Phil McCarten (UNITED STATES) 

Dr. Thomas Heaton, professor of engineering & seismology, Caltech, speaks during a news conference at the California Institute of Technology in Pasadena, California July 29, 2008, after a 5.4 magnitude earthquake in Southern California centered in the Chino Hills area. The earthquake struck east of Los Angeles on Tuesday and was felt hundreds of miles south to the Mexican border and east to Las Vegas, but there were no reports of injuries, major structural damage or power outages. REUTERS/Phil McCarten (UNITED STATES) 

Children play with an Olympic mascot outside the National Aquatics Centre during the Good Luck Beijing 2008 Swimming China Open, in Beijing February 1, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Claro Cortes IV (CHINA) BEST QUALITY AVAILABLE 

Paramilitary policemen stand guard outside the National Aquatics Centre during the Good Luck Beijing 2008 Swimming China Open, in Beijing February 1, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Claro Cortes IV (CHINA) 

Children play with an Olympic mascot outside the National Aquatics Centre during the Good Luck Beijing 2008 Swimming China Open, in Beijing February 1, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Claro Cortes IV (CHINA) also see GF2E47I0UX101 

Visitors walk outside the National Aquatics Centre, nicknamed the "Water Cube", during the Good Luck Beijing 2008 Swimming China Open, in Beijing February 1, 2008. A blue box beating with a green heart, Beijing's 'Water Cube' National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Claro Cortes IV (CHINA) 

People walk outside the National Aquatics Centre, nicknamed the "Water Cube", during the Good Luck Beijing 2008 Swimming China Open in Beijing January 31, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Jason Lee (CHINA) 

A volunteer dressed as a Beijing 2008 Olympic Games mascot stands outside the National Aquatics Centre, nicknamed the "Water Cube", during the Good Luck Beijing 2008 Swimming China Open in Beijing January 31, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Jason Lee (CHINA) 

People walk out of the National Aquatics Centre, also known as the Water Cube, after the "Good Luck Beijing" Swimming China Open in Beijing January 31, 2008. A blue box beating with a green heart, Beijing's "Water Cube" National Aquatics Centre is the product of design and engineering harmony, and a rising power's desire to announce itself to the world. The $143-million venue for swimming, diving and synchronised swimming at the Beijing Games opened with a test event on Thursday allowing the Chinese capital's residents to ponder the ethereal cuboid structure at close range for the first time. REUTERS/Jason Lee (CHINA) 

The space shuttle Atlantis is shown on the launch pad, covered by the Rotating Service Structure as mission managers develop strategy for launch at the Kennedy Space Center in Cape Canaveral, Florida December 7, 2007. Launch was postponed because of problems with critical engine cutoff sensors in the external fuel tank. REUTERS/Dave Martin (UNITED STATES)