Gap Fill - Level 5

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   assortment      biodegradable      blocks      cells      chemicals      colour      insulating      other      pieces      potentially      process      revolutionary      stages      stronger      thin      things      transparent      use      way      windows  
Scientists have invented a new for wood. They have found a to make it transparent. This could change the way we use and make many . See-through wood could one day replace glass in and tables, iPhone screens, and in a whole of other areas of building. Researchers at the University of Maryland experimented with different ways to remove the from wood that give it . A researcher said: "We were very surprised by how it could go. This can really open applications that can replace glass."

The researchers boiled small of wood in water, sodium hydroxide and chemicals for about two hours. The molecule that gives wood its colour disappeared during this . The colourless left behind meant the wood became transparent. The see-through wood is a lot than glass. It is better at against the cold. It is also . Research is still in its early . Researchers have only used small, blocks of wood so far. They will now focus on applying the process on bigger of wood.

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