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Check out the difference between a new and used toothbrush in this cool microscopic view

The easiest way to be a lazy human with bad hygiene is to not change your toothbrush every so often. Maybe after watching this enlightening video from Applied Science, we all can change that. Using a powerful microscope, we get to see the difference between a brand new toothbrush and an old toothbrush. The new one is…

Tears of joy and tears of sadness look different under the microscope

We can cry because we're happy. We can cry because we're sad. We can cry because we're cutting onions. We can cry just because we need to cry. They're all completely different emotions... but are they different tears? Photographer Rose-Lynn Fisher wanted to find out in her series The Topography of Tears. She put dried…

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