Production of beef and lamb makes about 15% of greenhouse gases, not mentioning transport of it, or dairy. Lot of greenhouse gases are produced for energy use,

Production of beef and lamb makes about 15% of greenhouse gases, not mentioning transport of it, or dairy. Lot of greenhouse gases are produced for energy use, heating, AC and similar. Problem is that we aren't really burning that much oil for our own personal transportation. We're burning oil on places where efficiency isn't a goal. Feeding a mammal to harvest meat or milk isn't efficient. We humans like meat, we support the industry and it keeps producing and transporting. Maybe giving up on a car once a week, or something similar is easy, but most of your burning comes through heating, AC, meat and dairy, and then transport. Transport is efficient, it's product of engineers. Mammals are product of evolution, they are not efficient in their production of meat and dairy. One will burn less much more if one changes the diet, not means of transportation.