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DeZha Smith, at 21-year-old farmer from north St. Louis, surveys dozens of collard green plants at the Jackie Joyner-Kersee Center in East St. Louis, Ill. The plants are part of a study examining the roots of heirloom varieties of collards.

217 Today: Collard enthusiasts are using science and preservation to lift up rare varieties of the leafy green

The 217 Today Podcast