It's been 3 years since this article on using nutritional supps for cows came out, does anyone know if there's been any progress?
http://www.timesonline.co.uk/tol/news/world/asia/article3254326.ece
Also been 2 years since SuperFreakonomics came out, but I haven't heard anything about non-methane producing kangaroo bacteria being squirted into cows yet either.
