An object's color appears differently under different lighting and against different backgrounds — for different viewers. But that doesn't mean colors are subjective.

Patriotism runs deep in this South Texas town nestled just along the border with Mexico. American flags fly outside many businesses. Pictures of veterans adorn light ...

Scientists employ electronic sum-frequency generation spectroscopy to investigate charge transport mechanisms in organic ...

The system seems versatile enough to detect basically any molecule, chemical or bacteria, good or bad. By adding two ...