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        Treasures of the Earth | What Is Metal Foam?

        Learn about the development of a new material called metal foam, in this video from NOVA: Treasures of the Earth: Metals. Metal foam is a combination of metal and rubber that can dramatically change shape when heated but becomes a strong solid again when cooled. See how metal foam is made and imagine some of its possible applications. For example, it could be used to make a vehicle that flies and then changes shape to travel underwater. Metal foam could also be used to make tools that change shape, which could be valuable when resources are limited (such as in space). This resource is part of the NOVA Collection.

        Visit the program page here.

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