spent coffee grounds and plastic water bottles — may be transformed into material that captures carbon dioxide.

Coffee filters are one of those kitchen items we always have on hand — and usually in high quantities — like napkins, paper plates and zip-top bags. And the inexpensive little papers come in handy to ...

Brewing coffee without plastic is not difficult — a stovetop percolator does a fine job preparing pre-ground supermarket beans. However, brewing a high-quality cup at a reasonable price without ...