Glenn Greenwald, the journalist who has broken numerous stories about National Security Agency spying using documents from Edward Snowden, has announced he is leaving The Guardian newspaper. In a statement posted on his blog, Greenwald wrote that he had been “presented with a once-in-a-career dream journalistic opportunity that no journalist could possibly decline.” Reuters reports Greenwald is joining a new media venture funded by eBay founder and multi-billionaire Pierre Omidyar.