A few months ago I watched a Documentary by some Vancouver people:
Just Eat It: A Food Waste Story (2014)
It was very sad to hear that so much food gets unused. Especially because in the biggest city there are all kind of problems related to poverty, un-affordable housing, unemployment and to see so many people unable to feed themselves while so much food simply doesn't get distributed to the people that needs it is heartbreaking. That goes without talking about other parts of the world that are underdeveloped and may not have the resources to have a fairer better way to address the needs of their people. Thus, citizen awareness and action goes a long way on getting everyone involved individually as well as at the community and government level into finding ways of better use of food and reducing the food waste.
Regarding the composting, although I was aware of its importance I had not grasped before the extent that its implementation could have in reducing emissions. That also bring us to the idea of doing our part individually as well as community-wise to get everyone on the same page, in their own families, places of work, etc to promote composting.