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Could Butanol be our new alternative to fossil fuels?

Wheat straw is a natural, renewable material that could soon be used to produce a new biofuel for our cars. But how and to what extent is that possible? To answer those questions, chemical engineers and biologists are teaming up at an experimental site in northern Spain. Researchers say it's a promising candidate to become an even greener, more efficient, more sustainable and cheaper alternative to existing biofuels like biodiesel or ethanol.