One type of board is available in both pink and blue colours, leading some to wonder what the difference is between them. They are both expanded polystyrene foam -- stronger than regular white foam -- ...

The typical foam board is made with an extruded polystyrene core and two layers of bleached, semigloss, white-clay-coated paper. Foam boards are available in a variety of thicknesses. Some common ...

A thick, toxic foam blankets the sacred Yamuna River, casting a shadow over New Delhi's spiritual rituals. The air is heavy ...