WikiLeaks has caused another international sensation by releasing classified documents about the Iraq war. We ask what we know now that we didn't know before. Are WikiLeaks and its whistle-blowers a curse or a blessing? Also, Iran begins to fuel its nuclear reactor, and cutting costs led to spills and explosions, and a PBS documentary on the oil company BP.
Banner image: WikiLeaks founder Julian Assange holds a press conference at Park Plaza Hotel on October 23, 2010 in London, England. Photo: Dan Kitwood/Getty Images