Potraviny, anebo palivo?

Když generální tajemník Organizace spojených národů Pan Ki-mun nedávno navštívil Antarktidu, ohromil ho tající led, který tam viděl. Poté pobýval v Brazílii, kde ho ohromila skutečnost, že v této zemi zajišťují čtvrtinu automobilové dopravy biopaliva. Olej lisovaný z řepkových semen lze používat jako naftu a z kukuřice nebo cukrové řepy lze vyrábět etanol nahrazující benzin.

OSN a mnoho zemí světa oficiálně sdílí názor, že biopalivo představuje jednu z možností v boji proti klimatickým změnám. Spojené státy štědře dotují výrobu etanolu z kukuřice, přičemž jeho produkce v současné době roste v USA o 12% ročně a ve zbytku světa téměř o 10% ročně. Členské země EU dotovaly v roce 2006 výrobu biopaliv částkou 3,7 miliardy eur; do roku 2015 hodlají z biologických zdrojů zajišťovat 8% motorových paliv a do roku 2020 20% motorových paliv. Kjótský protokol umožňuje státům dosahovat vytyčeného snižování emisí CO2 nahrazováním fosilních paliv biopalivy.

Je však opravdu moudrou a eticky přijatelnou strategií nejíst potraviny, ale raději je spalovat? Dopustíme-li, aby se potraviny používaly k výrobě biopaliv, pak budou ceny potravin svázány s cenami ropy, jak radostně oznámil předseda německé asociace zemědělců. Ceny potravin se v Evropě momentálně zvyšují, protože se stále více zemědělské půdy využívá k produkci nikoliv potravin, nýbrž biopaliv.

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