Better than plywood

Two teens made a strong, waterproof building material out of things that are normally thrown away

By Sid Perkins, 16:06 PM May 21, 2014

LOS ANGELES — A new material made from plant leaves could be replace plywood for many uses. The material is strong, waterproof, cheap and easy to make. Two teens invented it using a blend of pineapple waste and recycled plastics.

Those raw ingredients are abundant in Malaysia, where the girls live. The largest part of the new material is a type of plastic called high-density polyethylene. It is used to make many things, including milk jugs and shampoo bottles. Known as HDPE, this plastic is of...

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