Morning Buzz: March 22, 2007

This morning's top stories:

• The prime minister of Iraq has indirectly been discussing a cease-fire deal with Sunni insurgent groups over the past three months, the AP reports.
• The creator of the much-watched anti-Hillary Clinton ad for Barack Obama on YouTube that was a spoof on an old Macintosh ad, "1984," has been identified as an employee of Blue State Digital, a Washington company hired by the Obama campaign. The employee, Philip de Vellis, saying he acted on his own, resigned on Wednesday.
• A new push for alternative fuels is catching the attention of the biotechnology industry in what some are calling the "third wave" of biological engineering.
• Al Gore was in Washington Wednesday to testify about global warming in what the Baltimore Sun describes as a peculiar sort of homecoming.