food shopping

Whether you are shopping online or in the grocery store, the USDA grade shield on meat, poultry and eggs is a sign that the product meets certain voluntary national quality standards and has been graded by an USDA employee based on those standards.

This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio . We’ve long recognized that what we eat affects our health. But distances to stores offering healthy and affordable foods—as...