Beef Dilemma

Findings of a New Beef Eco-Report: Pound-for-pound, beef produced with grains and growth hormones produces 40% less greenhouse gas emissions and saves two-thirds more land for nature compared to organic grass-fed beef. more HERE
mmmm...so what'll it be? delicious grass-fed beef without hormones or massive antibiotic injections that may or may not be a cause of global warming? OR corn fed ...and, let's face it, anything fed mad cow diseased cattle dispensing so much antibiotics into our bodies that our immune systems are rendered obsolete? ...ever hear of 'super-bug'?...staph infection? ...whooping cough? It seems we can't even fight off viruses we thought we conquered years ago...
connection?
so...who is funding this 'study'? ...and who is lying?
...good luck