London bombing memorial, hydrogen airplane, Pamplona bulls

Young people jump into the air using PoweriZers, a new sport in the Polish capital, in Warsaw, Poland, on Tuesday. ( AP Photo/Czarek Sokolowski)

A U.S. Marine from the 2nd MEB, 1st Battalion 5th Marines jump over a stream as they patrol in the Nawa district of Afghanistan's Helmand province on Tuesday. (AP Photo/David Guttenfelder)

Newly born ostrich fledglings are seen at Berlin Zoo, on Tuesday. Six ostriches were born at the Berlin zoo on June 21 and 22, 2009. (AP Photo/Maya Hitij)

The plane "Antares DLR-H2", powered by hydrogen, takes off during its maiden flight at the Hamburg airport Fuhlsbuettel in Hamburg, northern Germany on Tuesday. (AP Photo / Fabian Bimmer)

A elderly man lectures protesters near the Via Veneto during a demonstration in Rome Tuesday, on the eve of the G8 summit scheduled from July 8 to July 10 in L'Aquila, central Italy. (AP Photo/Simon Dawson)

Uighur women grab a police officer as they protest in front of journalists visiting the area in Urumqi, China on Tuesday. The city, where rioting and ethnic clashes killed over one hundred people two days ago, remained extremely tense as security officials and police continued to restore order. (AP Photo/Ng Han Guan) READ THE STORY: TROOPS POUR INTO CITY IN CHINA'S RESTIVE WEST

A Uighur woman faints while protesting against the arrest of men in the community in Urumqi, China on Tuesday. Protests happened in several parts of the city and both Han Chinese and Uighur groups facing off with armed police. (AP Photo/Ng Han Guan)

U.S. Marine Corporal Taly Ramirez of St. Paul, Minnesota from 2nd Marine Expeditionary Brigade, RCT 2nd Battalion 8th Marines Echo Co. uses some downtime to fish in a canal on Tuesday in Mian Poshteh, Afghanistan . (Photo by Joe Raedle/Getty Images)

A Cambodian Buddhist monk beats a drum during a celebration marking the one-year anniversary of a U.N. decision to list the Preah Vihear temple as a World Heritage Site, in Phnom Penh, Cambodia on Tuesday. (AP Photo/Heng Sinith)

Friends and relatives of the victims of the July 7, 2005 London bombings walk amongst the pillars, in Hyde Park, on Tuesday in London. The memorial consists of 52 single columns representing the lives lost, and was officially unveiled by HRH Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall, four years after the terrorist attacks. (Photo by Stephen Hird /Getty Images)

Runners lead fighting bulls around a corner at Estafeta street during the 1st day of the San Fermin running of the bulls fiesta on Tuesday in Pamplona, Spain. People run through the streets of Pamplona with fighting bulls for eight mornings during the San Fermin fiesta which was made famous by Earnest Hemmingway's novel 'The Sun Also Rises'. The bullrun tradition in Pamplona dates back to 1591. (Photo by Denis Doyle/Getty Images)

A water-dropping plane tries to extinguish a fire in Grammatiko, about 30 miles north of Athens on Tuesday. Firefighters contained a blaze sparked outside Athens during a violent protest against plans to build a garbage dump in the area. The Fire Service used two water-dropping planes to douse the flames in Grammatiko. (AP Photo/Eurokinissi)

Xiomara Castro de Zelaya, center, wife of Honduras' ousted president Manuel Zelaya, receive flowers during a march in Tegucigalpa on Tuesday. Honduras' interim government gave hints Tuesday of a possible solution to a crisis caused by a coup, expressing the first signs of flexibility about the possible return of ousted leader Manuel Zelaya. (AP Photo/Esteban Felix)