What you're looking at above is not bubbles of melted gold on a rusted surface. It's dried-up blobs of espresso coffee. The high-power microscope image is part of Nikon Small World, a contest that ...
Coffee Goes Under the Microscope It’s a question that nags at you: is the coffee in this bag really the coffee on the label? Leslie Josephs joins MoneyBeat with a look how retailers are trying to ...
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