Why We Can’t Find a Legal Limit for Weed
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When it comes to driving, you’re probably familiar with the idea of a legal limit. But while we have a legal limit for alcohol, we can’t agree on one for cannabis. And because of the way cannabis affects your body, it’s possible we never will.
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Top 5 Unsettling College Mascots
Everyone loves a college mascot! But some of these are a choice… here’s a ranking of the most unsettling college mascots still active in 2026.
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Does Hank Green Shave His Butt? | Soupytime Asks Hank Anything
Soupytime (Georgie) joins Hank to asks what color the dress was, how Coke Zero is 0 calories, and why don’t pickles taste like cucumbers?
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Eons: Life and Death on Pangea | Premieres July 29: https://to.pbs.org/EonsAHA
Why Do We Have Butt Hair? | SciShow: https://youtu.be/BgsdhmLrLPA?si=RlYAS1v0IBx_l3oG
Psycholinguistics | Crash Course Linguistics #11: https://youtu.be/A5uNFKEn4_A?si=kZIkwcvgVaqf_Gwf
00:00:00 Introduction
00:02:48 What color was the dress?
00:09:14 How is Coke Zero 0 calories?
00:30:22 Why do cats lick themselves?
00:36:31 What is your dream version of the public school system?
00:50:44 Why don’t pickles taste like cucumbers?
00:54:31 Why don’t you shave your anus?
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The Physical Sciences
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Studying the fundamental laws of the universe sounds fancy, but what does it look like in practice? What separates physics from chemistry from earth sciences, and what do they share? Let’s look at how knowledge is gathered and discoveries happen in the physical sciences.
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Chapters:
0:00 – Introduction
0:45 – The Body of Knowledge
3:06 – The Process of Discovery
12:42 – Conclusion
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Sources:
https://archive.org/details/in.ernet.dli.2015.268339
https://www.britannica.com/science/physical-science/Science-from-the-Enlightenment-to-the-20th-century
https://www.feynmanlectures.caltech.edu/I_03.html
https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/1%3A_The_Basics_of_Physics/1.1%3A_The_Basics_of_Physics
https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/1%3A_The_Basics_of_Physics/1.1%3A_The_Basics_of_Physics
https://scienceexchange.caltech.edu/topics/quantum-science-explained/quantum-physics
https://www.nobelprize.org/stories/women-who-changed-science/marie-curie/
https://cse.umn.edu/esci/about-earth-sciences-major
https://louis.pressbooks.pub/physicalscience1/chapter/the-scientific-method/
https://pmc.ncbi.nlm.nih.gov/articles/PMC11390158/
https://www.gcu.edu/blog/doctoral-journey/qualitative-vs-quantitative-research-whats-difference
https://www.youtube.com/watch?v=gUaRK-POzx8
https://www.britannica.com/summary/radioactivity
https://www.britannica.com/science/scientific-hypothesis
https://www.britannica.com/science/pitchblende
https://pmc.ncbi.nlm.nih.gov/articles/PMC8313451/
https://research.columbia.edu/experimental-design
https://undsci.berkeley.edu/understanding-science-101/how-science-works/science-at-multiple-levels/
https://www.britannica.com/science/scientific-modeling
https://guides.libraries.psu.edu/c.php?g=322885&p=2162416
https://www.scienceandindustrymuseum.org.uk/objects-and-stories/john-dalton-atoms-eyesight-and-auroras
https://history.aip.org/exhibits/curie/unstable_text.htm
The Weirdest New Battery is... Rust
This video was sponsored by Breakthrough Energy.
A reliable grid powered by green energy is going to need batteries, too. Not just electric cars—think solar power on a cloudy day. Lucky for us, there’s an old battery showing new promise for long-duration energy storage. And its secret is rust.
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Axolotls Are In Danger. Here's Why That's Bad For YOU.
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One of the Internet’s favorite creatures is the axolotl. With their fluffy pink gills and big eyes, there’s no question these guys are cuties. But axolotls are in danger, both in captivity and in the wild. Here’s the story of how they evolved, why researchers took notice, and what’s at stake if we lose this endangered species.
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Shingles Vaccines Prevent Dementia
For decades, scientists have known that there was a weird link between shingles and dementia. But recent studies have made the connection clearer than ever—and established that the shingles vaccine may prevent the cognitive decline.
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The Universe Hacked Itself
The math is not mathing on black holes, tbh.
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What is Science, Really?
The word science may have you thinking of lab coats and DNA, but it holds much more than that! Science is both something we can know and something we can do and it stretches across different fields, all which can help you to better understand the world and your place in it.
If you want to freshen up your science knowledge, check out our Science Tune Up mini series in the Study Hall channel!
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Hank Green's Pig Impression
Can you tell your left from your right?
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