Even as opposition parties continued calls for a new election, Nigeria's new president Umaru Yar'Adua was inaugurated Tuesday following elections in April that international observers derided as being largely rigged.

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U.S. Airways proposed an $8 billion takeover of bankrupt Delta Air Lines on Wednesday, which would create one of the world's largest carriers. An expert talks about the impacts on the industry if the deal goes through.

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Delta and Northwest filed for bankruptcy Wednesday, illustrating the problem airliners are having with soaring oil prices and competition from smaller carriers.

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