Some of the invisible are brought to our attention by a group of sharp, blogging librarians who are not the stereotypical shushing, cardigan-wearing guardians of the reference room.

It takes a sharp eye to notice things aren' t exactly as it should be.

The front end -- with all the character lines, headlights, fog lights and air openings -- is much sharper and more pronounced than before.

This causes a star to be seen as a blurred disk rather than a sharp point.

His eyes met mine so keen and fierce, I started; and then he seemed to smile.