Calories. Cheese has only about 60% the calories of a starting volume of milk. [1] Plus, animals can graze on land you can't farm, and they're very portable.

Calories. Cheese has only about 60% the calories of a starting volume of milk. [1] Plus, animals can graze on land you can't farm, and they're very portable. [1] http://westhunt.wordpress.com/2012/01/21/the-indo-european-advantage/ http://westhunt.wordpress.com/2012/01/21/the-indo-european-a...