Reducing Our Dependency on Cows

3900 square miles X 680 acres/square mile X 1 golf course/145 acres X 1 year/365 days X 24 hours/day X 60 minutes/hr = 0.035 golf course/minute, or 29 minutes/golf course
I just came across the meme here, with this text:
No. Calcium does not come from milk.
Calcium comes from the earth – it’s a naturally-occurring mineral – that is absorbed into the roots, then stems, then blades of grass that the cow eats. Yes, it then finds its way into the cows’ milk.
But, why not just cut to the chase? You’re not a calf, so get your calcium directly from plants.
Plants have far more available calcium than dairy products – without the saturated fat and calories and costs (your wallet and the environment).
