Pope Francis emphasized the right to food as fundamental in a video address to 500 experts working on a wide-ranging document aimed at raising awareness of issues surrounding food and nutrition.

Francis said the paradox of abundance described by Pope John Paul II — there is food for everyone yet not everyone can eat — has not been resolved.

The pope addressed a session Saturday of 500 experts drafting the so-called Milan Charter that seeks commitments from governments, organizations and individuals during the Expo 2015 world's fair to resolve such issues as food security, decreasing food waste and ensuring biodiversity.

Francis urged delegates to focus on resolving "the structural causes of poverty," and to maintain the dignity of the individual at the heart of economic policy.