7 killed and dozens injured in series of Baghdad attacks May 31, 2012 -- Updated 0914 GMT (1714 HKT) It is unclear who committed the attacks and whether they are linked The attacks occur in several Baghdad neighborhoods Thursday's spate of violence come after scores were killed during attacks in April Baghdad (CNN) -- A series of explosions in a three-hour period rocked several areas in Baghdad on Thursday morning, leaving seven people dead and dozens injured, Iraqi police said. It was unclear who committed the attacks and whether they were linked. One of the explosions occurred in a Shiite neighborhood in northwestern Baghdad. A parked car bomb exploded in a busy area of the neighborhood, killing four people and wounding 18 others, police said. In a Sunni neighborhood in western Baghdad, bombs planted near two homes left two people dead and seven others wounded. In a different Sunni neighborhood, four people were wounded after a roadside bomb exploded on a busy road. Four police officers were also wounded after a roadside bomb exploded in a Sunni district in the southern part of the capital city, police said. Also in western Baghdad, a car bomb exploded near the home of an adviser of Iraq's Council of Ministers, police said. The government official and his family was not home during the attack, but a bystander was killed and four others were wounded. Thursday's spate of violence come after scores were killed during attacks in April. According to the Interior Ministry, 126 people were killed in violence and 271 were wounded in April. May 30, 2012 -- Updated 2350 GMT (0750 HKT) It's an outside-the-box solution, says Clyde Prestowitz, but the German government can save Greece by reissuing its beloved deutsche mark. May 30, 2012 -- Updated 1956 GMT (0356 HKT) Alleged poison attacks against students in Afghanistan show the fragility of the country's transition, says Gayle Lemmon. May 30, 2012 -- Updated 0927 GMT (1727 HKT) Airport dining doesn't have to be terminal, as a new wave of eateries elevates cuisine above the level of greasy burgers and wilting sushi. May 30, 2012 -- Updated 2310 GMT (0710 HKT) Andrew Keen says our self esteem is determined by our use of social media -- so let's embrace tech which lets data degenerate over time. Republican Graham Smith argues why the UK monarchy should be consigned to the history books. Queen Elizabeth was criticized for being aloof after Princess Diana's death in 1997. But one royal insider says that wasn't the case. May 30, 2012 -- Updated 0945 GMT (1745 HKT) Businessman Christian Stadil believes firms must care about more than money and that corporate social responsibility helps attract talented workers. May 30, 2012 -- Updated 1712 GMT (0112 HKT) It's hard being a female busineswoman in a country where women need permission to work or travel. But some try. May 31, 2012 -- Updated 0911 GMT (1711 HKT) He's been running all his life, running for freedom, running for peace. Now Reza Baluchi is heading for Mt. Everest by running across the Middle East.