This undated photo provided by NASA, astronauts Mark Kelly, right, STS-124 commander, and Scott Kelly are pictured in the check-out facility at Ellington Field near NASA's Johnson Space Center in Houston. NASA announced Friday, March 7, 2014, that Mark Kelly and astronaut Scott Kelly will participate in 10 different investigations. Craig Kundrot, deputy chief scientist of NASA's Human Research Program, says in a news release that the brothers provide a unique opportunity to study two people with the same genetics who were in different environments. Officials say Scott Kelly spent a year in space while Mark Kelly was on Earth. NASA says it is hoping the studies can be the basis for future research initiatives. (AP Photo/NASA)
In this photo taken Thursday, March 6, 2014, Turkish Prime Minister Recep Tayyip Erdogan addresses a rally of his Justice and Development Party in Elazig, Turkey. Erdogan has threatened drastic steps to censor the Internet, including shutting down Facebook and YouTube, where audio recordings of his alleged conversations suggesting corruption have been leaked in the past weeks, dealing him a major blow ahead of this month's local elections.(AP Photo/Burhan Ozbilici) .
ADVANCE FOR SUNDAY, MARCH 9 -- Lance McNally, 39, holds an electronic cigarette that contains a nicotine liquid which is heated by a rechargeable battery to produce vapors Friday, March 7, 2014 in Lansing, Mich. Banning the sale of electronic cigarettes to kids may seem like a no brainer, yet Gov. Rick Snyder’s administration and a number of health advocacy groups are opposing legislation that does just that. (AP Photo/Emma Fidel)