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Yes, and studies of agricultural efficiency and environmental impact consistently point to one thing that has the most positive effect: eat less meat.

The impact of local production, or reducing "food miles" as it's sometimes branded, is typically small, and in many cases the locally grown food is more energy intensive to transport to consumers than food grown at great distances:

https://news.climate.columbia.edu/2012/09/04/how-green-is-lo...

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I would argue the greatest benefit of locally produced food is not necessarily reduced transportation expenses, but instead the consumer's visibility into the supply chain. It has been my experience that people are better stewards when they can see directly what impacts their behaviors have on the environment around them.

This is a really good point. Maybe naively, I want to believe a lot of people would eat healthier and waste less if they saw first hand what it takes to feed us, particularly the impact of food production on the workers that bring that food to market, and the impact on the animals we use for food.

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