Jaén (Spain) (AFP) – In the scorching heat Felipe Elvira inspects the branches of his olive trees, planted as far as the eye can see on a dusty hillside in southern Spain. “There are no olives on these. Everything is dry,” the 68-year-old says. He and his son own a 100-hectare (250-acre) olive farm in the southern province of Jaen in sun-drenched Andalusia, a region which produces the bulk of the country’s olive oil. But a severe drought gripping much of Spain threatens to shrivel their harvest this year.