Arnold Schwarzenegger gained US citizenship.
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Nature magazine announced that more than 3 million people die yearly from air pollution.
Barbra Streisand's album 'Partners' was released, featuring duets with many hugely famous male artists.
The Metropolitan Opera House opened to a full house in New York City.
The New York Times published an investigation declaring Guantanamo Bay Prison as the most costly prison in the world.
The Wall Street bombing took place in Manhattan, New York City.
