The science pros at The King of Random show how to make invisible ink at home with simple materials.

E-Ink is brilliant and infuriating with weeks-long battery life and outdoor visibility but also sluggish refresh rates and muted colors.

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It's easy to make a working stylus for your tablet or mobile device with just a few household supplies, including an ink pen and cotton swab.

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Withholding environmental data stands in direct contradiction to several national and international legal commitments.

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