Extras

Video thumbnail: NOVA Making Steel From Trash

NOVA

Making Steel From Trash

Could pieces of plastic garbage become the resource we need to construct buildings?

Making Steel From Trash

Video thumbnail: NOVA Treasures of the Earth: Metals Preview

NOVA

Treasures of the Earth: Metals Preview

What is it about the nature of metals that have made them a pillar of human civilization?

Treasures of the Earth: Metals Preview