Can Xylella be stopped?

Scientists analyze olive samples for Xylella fastidiosa.

The setting is a mellow fall day in the vineyards of the Santoro Tenuta in the Valle d’Itria, an agricultural wonderland now the epicenter of efforts to stop the spread of Xylella fastidiosa, a lethal plant bacterium killing thousands of olive trees here in Puglia, the boot-heel of Italy.