As temperatures rise, we're compelled to shed the bulkier all-black layers that carried us through winter to make space for a few brighter shades. It's only natural to be curious about effortless ways ...

The world is awash with the color purple — lavender flowers, amethyst gemstones, plums, eggplants and purple emperor butterflies. But if you look closely at the visible-light portion of the ...

This week, millions of Americans are anxiously scanning air quality maps focusing on two colors: red and purple. Red indicates "unhealthy" air quality, and purple? "Very unhealthy." When did purple ...