Many Australians are choosing oat, almond and soy over cow’s milk – but which choice is the most sustainable? Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com Many Australians are choosing oat, almond and soy over cow’s milk – but which choice is the most sustainable? Change by degrees offers life hacks and sustainable