Visible Veins and Seasonal Skin Changes

Can one physically de-escalate? Are my hands actually colder than other parts of my body? Why can I see my veins so well? What would the internet look like if it was a 3D space? How do I know if I’m doing enough for my students? What would it feel like to be hit by a gravitational wave? How do we know the distance between the Earth and the Sun? Do squirrels get bored? …Hank and John Green have answers!

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