Redefinir o Desenvolvimento Sustentável

MELBOURNE – Albert Einstein afirmou certa vez que se tivesse apenas uma hora para encontrar uma solução da qual a sua vida dependesse, passaria os primeiros 55 minutos a definir o problema. Assim que soubesse qual seria a pergunta certa a fazer, conseguiria resolver o problema em menos de cinco minutos.

Actualmente, a humanidade enfrenta um problema que põe em risco a sua vida: Como conseguiremos proporcionar uma alimentação adequada e uma boa qualidade de vida a uma população global que irá ultrapassar nove mil milhões em 2050, sem danificar irremediavelmente o nosso sistema de suporte de vida no planeta? Para encontrar uma solução, devemos começar por clarificar o problema.

O homem alterou profundamente os ecossistemas da Terra. Ao interferir com os ciclos de carbono, nitrogénio, água e fósforo, a actividade humana altera a atmosfera, os oceanos, os cursos de água, as florestas e os lençóis de gelo e diminui a biodiversidade. Na verdade, os efeitos do comportamento humano nos ecossistemas do planeta tornaram-se tão significativos nos últimos séculos que, actualmente, muitos cientistas acreditam que o planeta entrou numa nova era geológica denominada Antropoceno.

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