Beef production is often considered a negative impact on the environment due to concerns with greenhouse gas emissions, particularly due to methane produced during fermentation. This study uses pen-level methane barns to capture and quantify the impact of feeding different types of distillers grains and feed combinations on methane gas production. If feeding distillers grains decreases methane production, then value increases for use in beef feedlots, particularly if the distillers are of common types in Nebraska. Curriculum is also being added so students can see and learn about how cattle digest forage and grains (and distillers grains) through rumen fermentation.