Spanish officials have confirmed the arrival of
Xylella fastidiosa,
a pathogen deadly to olive trees, on the country's mainland. About half
the world's olive oil comes from Spain's estimated 340 million olive
trees, and experts fear the bacteria could devastate the harvest. Up to a
million olive trees in Italy were killed by the infection last year,
leading Italian officials to chainsaw trees to the ground in an effort
to stop the sickness.
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