Source: The Guardian 

All milk alternatives are far better for the planet than dairy. A 2018 study by researchers at the University of Oxford showed that producing a glass of dairy milk results in almost three times more greenhouse gas emissions than any plant-based milk and it consumes nine times more land than any of the milk alternatives.

Plant milks can, nevertheless, have a dark side, as when any crop is produced in mass quantities. It’s important to consider not just whether they are grown using organic methods.