How is Food Waste an Environmental Problem?

You probably already know that food waste is a huge problem, but the United Nations Environmental Program just came out with a report which shows that it might be much bigger than we think. To talk about the problem I interview David Lazarus. He is the consumer columnist for the Kay times and does daily consumer segments with

KTLA. I asked him, why is food waste such a big problem, how is food waste connected to Climate Change, and what did the new UN report say about the issue. 

How is Food Waste an Environmental Problem?