Table 1 Environmental impacts of lunches served in the National School Lunch Program during the 2014–2015 SY.

From: Less animal protein and more whole grain in US school lunches could greatly reduce environmental impacts

 

Mean (SE)

Global Warming Potential kg CO2 eq.

Land Use m2a crop eq.

Water Consumption m3

Eutrophication Potential

Marine g N eq.

Freshwater g P eq.

Per Lunch

1.5 (2.7E-2)

1.8 (3.4E-2)

5.5E-2 (6.6E-4)

3.1 (4.9E-2)

0.24 (1.6E-3)

Per 1000 kcal

2.4 (4.3E-2)

2.9 (5.5E-2)

8.9E-2 (1.1E-3)

5.0 (8.0E-2)

0.39 (2.7E-3)

  1. SY School year, SE standard error of the mean is the variability of lunches from School Nutrition Meal Cost Study.
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