Cómo afrontar la crisis global del agua

CAMBRIDGE – A nivel mundial, la demanda de agua potable se duplica cada 20 años debido al crecimiento de la población y de la riqueza. Sin embargo, la contaminación, el cambio climático y las invasiones de agua salada están reduciendo las reservas de agua dulce a un ritmo similar. Así pues, ¿estamos ante una crisis de agua potable?

Afortunadamente, la situación parece ser menos alarmante. No se pretende negar con esto que las reservas de agua potable estén disminuyendo. Si no se hace algo al respecto, podrían ocurrir serios trastornos para la sociedad.

Muchas personas sostienen que el agua es distinta a otros recursos como el petróleo, porque no se puede sustituir en la mayoría de sus usos (particularmente la producción de alimentos).  Además, el agua es esencialmente un recurso fijo, aunque se renueva cada año.

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