Tonight on "Nightly News" we told viewers about a cognitive self-assessment test developed by researchers at Ohio State University that can help determine your mental ...

Minerals come in a variety of forms and have many uses, some being valuable jewels but others being used chiefly as abrasives, to make a surface smooth by rubbing off imperfections and projections.

We hear a lot about lens sharpness; but what does it actually mean? It’s not easy to quantify but for images to appear sharp, both sharpness and contrast are involved. However, you can’t measure ...

Ancient marine animals called conodonts possessed incredibly sharp feeding elements. New research shows these extinct creatures had sharper tips than any living vertebrate. Scientists used advanced ...