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Danielle Nierenberg , the founder and former co-director of Nourishing the Planet , spent two years traveling to over 35 countries throughout sub-Saharan Africa , Asia , and Latin America meeting and interviewing over 200 projects and individuals with different non-profits and farmers groups collecting information on sustainable agriculture innovations that are improving to food security .
 Danielle Nierenberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Danielle Nierenberg