This story was originally published by Grist. Sign up for Grist’s weekly newsletter here. There’s a Keurig machine in some 40 million households in the U.S. Single-serve coffee brewing ...

Prices and availability are subject to change. The Keurig K-Duo makes 6-, 8-, 10- and 12-ounce single servings of pod coffee or a 12-cup glass carafe of any ground coffee you have on hand via its brew ...

There’s a Keurig machine in some 40 million households in the U.S. Single-serve coffee brewing systems — which allow consumers to make just one cup of coffee at a time by feeding a pod into a ...