If you want to combine your love of espresso with a desire to be green, you may have to make a few unexpected coffee choices.

Our addiction to single shot coffee capsules is not good for the environment, because of the energy to grow the beans, make the capsules, brew the coffee, and dispose of the waste. But there’s an upside: capsules turn out to be a more sustainable way of drinking espresso than nearly any other method of making coffee. And according to new research, recyclable aluminium pods are more environmentally friendly than all other capsules, whether they are made from plastic or compostable materials…