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Teen solves centuries-old math problem

SAO PAULO, March 27 (UPI) -- Brazil and Italy are teaming up to build four biodiesel plants in Brazil, said Italian Prime Minister Romano Prodi following his visit to Brazil.
The plants are expected to cost about $480 million, Estado de Sao Paulo reported Tuesday.
Brazil is the leading producer of sugar-based ethanol, an alternative fuel source that has been increasing in popularity amid rising global oil prices.
Brazilian vehicles run on a mixture of gasoline and ethanol.
Earlier this year, U.S. President Bush made Brazil the first stop on his tour of Latin America, a visit that was punctuated by a U.S.-Brazilian agreement to increase ethanol production in Latin America.
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HAVANA, May 25 (UPI) --
Cuba is reportedly sitting on vast underwater oil and gas reserves, but none came up in the latest exploration, a joint Chinese-Spanish undertaking.
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LONDON, May 25 (UPI) --
Military pilot training and training aircraft were in the news this week, with European companies reaping more than $3 billion in contracts.
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First-time buyers are driving the expectations that a recovery has begun. Their numbers and market share are growing despite financing roadblocks and competition with investors for entry-level homes. ...
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The photos are familiar, but the captions are not, as economic tension skips across the continent of Europe.
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