Do labels like 'cage-free' mean eggs are more sustainable?

When it comes to different types of eggs, it’s about conditions more than carbon

The average American eats around 180 eggs a year, which makes sense: Eggs are a versatile, delicious, convenient source of protein. One large egg has 6 of the 65-ish grams a 180-pound person needs in a day, and, like all animal proteins, it’s complete, meaning it’s got all the amino acids our bodies need to function. 

When it comes to straight-up emissio…