Voice of America: A new study by researchers at Rice University in Houston, Texas warns that expanded production of crops to produce biofuels could damage water resources. The researchers suggest policy makers take into account what they call the “water footprint” when encouraging biofuel development. The study is titled The Water Footprint of Biofuels: A Drink or Drive Issue? The suggestion is that by using too much water to produce fuel, humankind might leave itself with not enough water to drink or …