Latest Lesson
What if you didn’t brush your teeth for a year? - Justin Meritt
Trace the impact that not brushing or flossing can have on your teeth, gums, microbiome, and overall health over time. -- At any given ti...
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Puzzle through an ethical dilemma and decide: what responsibility do we have to honor the wishes of the dead? -- For decades, Yvonne and Z...
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Sharpshooter insects make a living hopping around plants like grapevines and feeding on their sap. When it's time to mate, they shake t...
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Why making glass fibers to send signals was almost impossible. Sponsored by Saily - 🌎 Get an exclusive 15% discount on Saily data plans! ...
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