Which doesn’t really matter because people don’t put milk in their coffee to add x amounts of calories. So in almost all cases, they will use the same amount in volume/weight.
And a lot of other plant based milk alternatives have an even lower environmental impact, the difference between your average milk and milk alternative will be even bigger.
Just wrote a comment with bad math.
Almond milk and cow milk are effectively the same in terms of cal/pollution rate.
Cow milk produces 4x as much pollution, but also produces 4x as many calories.
Which doesn’t really matter because people don’t put milk in their coffee to add x amounts of calories. So in almost all cases, they will use the same amount in volume/weight.
And a lot of other plant based milk alternatives have an even lower environmental impact, the difference between your average milk and milk alternative will be even bigger.