Sarah Kay was studying the origins of foods in kindergarten. One day, she and her mother were walking through the grocery store discussing what ingredients went into various products. Sarah Kay said, ""Pork comes from pigs and beef comes from cows."" Then she asked, ""How DO they get the pork from the pig, Mommy?"" Her mother felt that the truth was the only way to go, so she explained that they kill the animal to eat its meat. Horrified, Sarah Kay went past shelves staring at the meat and sayin…