Green Steps- Rotary Supporting the Environment is encouraging all Rotarians as a service project to have at least Meatless Mondays or Beefless Being. Cattle have an outsized environmental impact largely because they belch up methane, a potent planet-warming gas. Studies have found that beef production creates roughly four to eight times the emissions from pork, chicken or egg production, per gram of protein, and all have a larger climate-change footprint than plant-based proteins like soy or beans.