The Dow surges over 600 points at the close.
Monsanto abandons $47 billion takeover bid for Syngenta.
Virginia TV journalists are killed in on-air shooting; suspect shoots self.
They were the first journalists to be slain in the U.S. since 2007.
Contrary to reports, Android Pay is not launching this week.
James Holmes is formally sentenced to life in prison.
Facebook unveils Siri-like personal assistant called “M.”
Walmart is going to stop selling AR-15s and other assault rifles.
Marco Rubio dismisses Trump in New Hampshire, says he won’t “be our nominee.”
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