I eat low meat rather than no meat, about a third of the UK average, although the data I've found seems to vary quite widely.
Meat is really horrendous for the environment though, it takes about 30 acres of beef farm to produce the same amount calories as one acre of arable land. Food production accounts for over a
quarter of all global greenhouse emissions:
View attachment 1984
When you look at the
emissions from each type of foodstuff, it's apparent that for reducing the burden from food production, cutting out meat is the easy win:
View attachment 1985
To put beef into perspective:
From the
ACSM Compendium of Physical Activity,
cycling at 12mph uses 7.4 METs, ~5.7 METs more than driving, so a 64kg person will use 5.7*64 = 365kcal/hour, or 365/12 = 30.4kcal/mile. If all those calories were to come from beef at 36.44kg CO2eq per 1000kcals, that's 30.4*36.44 =
1108g/mile.
A
typical BEV emits
208g/mile.
The more often you eat meat the more more often you can give it up. Win win.
I used to work a few hundred yards downwind of an abattoir, the stench when they had a clear out wasn't very lucky.