Commentary Brain-dead mainstream media: 50 ppb of arsenic is dangerous to drink, but 50,000 ppb of mercury is safe to inject into children – NaturalNews.com Posted on April 10, 2015 by johnbarleycorn12 Brain-dead mainstream media: 50 ppb of arsenic is dangerous to drink, but 50,000 ppb of mercury is safe to inject into children – NaturalNews.com. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading...