Argyria, a rare disorder caused by the accumulation of silver in the body, has left people with a permanent gray or blue-gray skin tone. Though such a transformation might seem like a scene from a ...

Known as the world’s first ‘Smurf Village,’ Juzcar has embraced its striking blue appearance since June 2011, drawing tourists from around the globe and breathing new life into its local ...

The finding Walker and his colleagues tested intestinal integrity by feeding the flies food tinted with blue dye. Although they saw no effect of the dye on food intake, they did notice that older ...