Interesting article.
Meat, cheese and eggs have the highest carbon footprint. Fruit, vegetables, beans and nuts have much lower carbon footprints.
In my opinion all of them are serious problems that need some kind of solving.
Figures from the Environmental Working Group’s Meat Eater’s Guide and the EPA’s Guide to Passenger Vehicle Emissions show that rice is ranked on 10th position out of 16 and it has a 2.7 CO2 Kilos Equivalent and a 6 Car Miles Equivalent.