Rewritable Paper and Water Ink Could Cut Paper Waste, Scientists Report

Yale e360
By Yale Environment 360Feb 21, 2014, 12:46 pm38 pts
A new type of rewritable paper that uses water as ink could slash the amount of paper that's wasted daily, researchers say. The paper contains hydrochromic dyes — chemicals that change color when wet — and a single Click to Enlarge Printed document page can be reused dozens of times, the scientists report…

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