A massive global increase in factory-farmed meat production by 2030 will increase antibiotic use by 67 percent, posing a “public health threat,” predicts a newly released study published in the Proceedings of the National Academy of Scientists (PNAS). Rampant antibiotic use in factory farms, required by global meat corporations, is already resulting in an antibiotic-resistance crisis in the U.S. (over two million illnesses and …