WASHINGTON (CNN) -- Red flags, unexplained etchings on a shotgun, claims of poor police response. It's been three days since Aaron Alexis went on a shooting rampage at the Navy Yard in Washington. And each new day since has brought new revelations about his past, the attack and the subsequent inquiry.

(CNN) -- You were more likely to be struck by lightning or attacked by a shark -- maybe even at the same time -- than win Wednesday night's Powerball drawing.

Wall Street's top regulator, the Securities and Exchange Commission, voted 3-to-2 at a meeting Wednesday to propose the rule that would force publicly traded companies to disclose a ratio that compares CEO pay with that of salaries of those who work for them.

Last week, an article in the University of Alabama's student newspaper, The Crimson White, claimed that several sororities on campus had denied membership opportunities to black students because of their race. The article relied on the account of one named sorority sister and several other anonymous contributors who painted a picture of a segregated Greek system yearning for change.

President Barack Obama tells the Business Roundtable that Congress must pass a budget and not negotiate on the health care law

The Washington Navy Yard shooting could possibly have been prevented if tougher background checks were in place, President Barack Obama said on Tuesday, raising new concern about the frequency of mass shootings.

(CNN) -- Former White House Chief of Staff Bill Daley is dropping out of the race for Illinois governor, Daley told the Chicago Tribune on Monday.

WASHINGTON (CNN) -- It's been five years since the banking and credit crisis rocked the U.S. economy, causing markets to plunge, unemployment to spike, housing values to crumble and placing more Americans in financial peril than at any time since the Great Depression.

WASHINGTON (CNN) -- A commission that investigated last year's terror attack on the U.S. diplomatic compound in Benghazi, Libya, that killed four people lacked sufficient independence and did not hold senior officials accountable, a congressional report said on Monday.

BIRMINGHAM, Alabama (CNN) -- Fifty years have passed since a bomb stopped the old sanctuary clock in Birmingham's 16th Street Baptist Church, locking in a moment that would change a nation.