On a recent afternoon, Aidan showed a visitor his newest model, tweaked to respond to his critics: a towering seven-foot tree form adorned with solar panels and painted green.

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Or, most likely of all, he could ask Massimo D'Alema, the leader of the Democrats of the Left, the main branch of the ruling Olive Tree coalition to try to form a government himself.

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Several historians, when confronted with the question, speculated that the basketball bracket could have its roots in another organizational art form: the family tree.

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Protection could extend to new tree plantings or the creation of new habitats where birds could form communities.

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It is said that the Romans often cut down a fir tree to keep in their houses during the sparse winter months as a form of appeasement to the goddess Ceres (originally Demeter, Greek goddess of the hearth).

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Fungi, such as tree lungwort, has been found to contain properties that could fight the human form of "mad cow disease".

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In northern Lebanon, in the town of Becharre near the famous cedar tree forests, the local specialty is kibbeh mishwiyeh: fresh minced lamb rolled up with bulgur wheat to form giant meatballs the size of tennis balls, stuffed with caramelized onions and pine nuts and grilled until crunchy on the outside.

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