NPR News: Soaring Popularity Of Grass-Fed Beef May Hit Roadblock: Less Nutritious Grass

Soaring Popularity Of Grass-Fed Beef May Hit Roadblock: Less Nutritious Grass
Since the mid-'90s, levels of crude protein in the plants, which cattle need to grow, have dropped nearly 20 percent, and it may just be a matter of time before prairie grasses can't support grazing.

Read more on NPR