Pope John Paul II proclaimed the day as the first-ever World Youth Day.
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James Cameron dove into the deepest point of the Marianas Trench, Challenger Deep.
Michelle Obama's memoir 'Becoming' surpassed 10 million copies sold after four months of circulation.
Up to 20,000 people were killed in an earthquake in Caracas, Venezuela.
The battle of Iwo Jima was won by the US after a month and a week of fighting.
The first edition of the Book of Mormon was published in Palmyra, New York.
