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 ...

When scientists discover a round, lumpy object that they can't totally explain, they have a special name for it: A blob. Blobs come in all shapes and sizes. Some are as small as cells, others as big ...