Original sentence: According to Borlaug, "Africa, the former Soviet republics, and the cerrado (grasslands of Brazil) are the last frontiers.Journal articles by Borlaug on PubMed.The resulting increases in food production are widely held to have saved over a billion people from starvation, and greatly improved the food security situation in those nations
Edited sentence: According to Borlaug, "Africa, the former Soviet republics, and the cerrado [grasslands of Brazil] are the last frontiers.Biography and Nobel Peace Prize Lecture.Detailed essay on Norman Borlaug.International Maize and Wheat Improvement Center (CYMMIT).Interview with Reason Magazine, April 2000.Medical journal articles by Borlaug on PubMed.The World Food Prize.The resulting multiplications in food production have saved over a billion people from starvation and greatly improved the food security of those nations