How much energy does it take to produce a steak?
Meat and dairy products, particularly from cows and other livestock, account for around 14.5 percent of the world's greenhouse gases each year, which is about the same amount as emissions from all cars, trucks, airplanes, and ships combined.
According to a study published last year in the journal Science, beef and lamb have the biggest climate footprint per gram of protein, followed by pork and chicken. In this calculation of the average greenhouse gas emission associated with different foods, plant-based foods tend to have the smallest impact. Of course, they are also less yummy.
Thankfully, this doesnβt mean we all have to go vegan. Just eating less beef, lamb and cheese would be enough.
https://www.pnas.org/content/114/51/13412
In other words if Americans, Europeans and Japanese gave up steak then greenhouse gases 'related to the production of the food they eat' would fall by 13 percent to 25 percent - more than due to the emissions from cars / trucks
Some food for thought.