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Nuclear security rules exist for places like universities and hospitals, not just nuclear facilities.
The queue is forming on McDonald's website for Tehran restaurants.
U.S. is a superpower when it comes to supercomputers. It's a costly achievement.
Kai Ryssdal talks to Kim Zetter about her book.
The Wall Street Journal reports on "planetary defense."
As Iran prepares for nuclear talks in Geneva, the current international sanctions still impact everyday life in Iran.
