Smart irrigation, sexual confusion, and insect hotels: Is this the world's greenest winery?

Rioja brand Campo Viejo's vast grape growing, ageing, and bottling operation in Northern Spain has been 'carbon neutral' since 2012 - BusinessGreen takes a tour.
Tucked away in a valley in northern Spain's La Rioja region, 3,000 hectares of rolling, vine-lined fields sit atop a plateau bordered by the Ebro river. Situated just a couple of hours' drive south of...
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