“milk is not harvested from cows by grinding them up and extracting the milk”

 

http://www.greencarcongress.com/2009/06/diatoms-20090618.html

 

Dr. Stephen R. Humphrey, Director of Academic Programs,
School of Natural Resources and Environment,
Box 116455, 103 Black Hall, University of Florida
Gainesville, FL  32611-6455  USA
Tel. 352-392-9230, Fax 352-392-9748
http://snre.ufl.edu