The importance of human access to adequate food could not be more clear; however, many questions surround the provision of food among and within countries. What obligations do nations have to provide food for their citizens? Is inequality in food availability a problem that requires political action, or is it simply an unfortunate side effect of food distribution systems and landscapes' ability to produce calories for those who live on them? Writing in BioScience, Dr. Paolo D'Odorico of the University of California, Berkley, and his colleagues present these questions through the framework of human rights, delving into the various ways in which food availability and inequality are affected by trade. Drawing from a wealth of data, the authors find that, broadly speaking, trade tends to reduce food inequality. But joining us in this episode of BioScience Talks, Dr. D'Odorico cautions that more complex phenomena may lie beneath the surface, confounding simplistic explanations.  Read the article. Subscribe on iTunes. Subscribe on Stitcher. Catch up with us on Twitter.