Your Extra Artery, Emotional Hangovers, LEDs Are Bad for Bugs
Curiosity Weekly
Warner Bros. Discovery
4.6 • 963 Ratings
🗓️ 18 October 2021
⏱️ 13 minutes
🧾️ Download transcript
Summary
Learn why more humans are growing an extra artery; emotional hangovers; and the drawbacks of energy-efficient LED streetlamps.
More humans are growing an extra artery, which shows we're still evolving by Cameron Duke
- Lucas, T., Kumaratilake, J., & Henneberg, M. (2020). Recently increased prevalence of the human median artery of the forearm: A microevolutionary change. Journal of Anatomy, 237(4), 623–631. https://doi.org/10.1111/joa.13224
- McRae, M. (2021). More And More Humans Are Growing an Extra Artery, Showing We’re Still Evolving. ScienceAlert. https://www.sciencealert.com/more-humans-are-growing-an-extra-artery-in-our-arms-because-we-re-still-evolving
Emotional Hangovers Are Real, And They're Not What You Think by Sam Suarez
- Waude, A. (2016, February 23). Emotion And Memory: How Do Your Emotions Affect Your Ability To Remember Information And Recall Past Memories? Psychologistworld.com; Psychologist World. https://www.psychologistworld.com/emotion/emotion-memory-psychology
- Mather, M., & Sutherland, M. (2012). The selective effects of emotional arousal on memory. Https://Www.apa.org. https://www.apa.org/science/about/psa/2012/02/emotional-arousal
- Tambini, A., Rimmele, U., Phelps, E. A., & Davachi, L. (2016). Emotional brain states carry over and enhance future memory formation. Nature Neuroscience, 20(2), 271–278. https://doi.org/10.1038/nn.4468
- New York University. (2016, December 27). Is there such a thing as an emotional hangover? Researchers find that there is. PsyPost; PsyPost. https://www.psypost.org/2016/12/thing-emotional-hangover-researchers-find-46675
Energy-efficient LED streetlamps are bad news for insect populations by Cameron Duke
- Boyes, D. H., Evans, D. M., Fox, R., Parsons, M. S., & Pocock, M. J. O. (2021a). Street lighting has detrimental impacts on local insect populations. Science Advances, 7(35), eabi8322. https://doi.org/10.1126/sciadv.abi8322
- Portree, D. S. F. (2002, October). Flagstaff’s Battle for Dark Skies. The Griffith Observer. http://www2.lowell.edu/users/wes/GriffithObserver1crop.pdf
- Sharon, W. (2007). STUDYING THE ECOLOGICAL IMPACTS OF LIGHT POLLUTION ON WILDLIFE. StarLight: A Common Heritage. https://www.researchgate.net/profile/Sharon-Wise-3/publication/242297944_STUDYING_THE_ECOLOGICAL_IMPACTS_OF_LIGHT_POLLUTION_ON_WILDLIFE_AMPHIBIANS_AS_MODELS/links/00b7d53bd619157183000000/STUDYING-THE-ECOLOGICAL-IMPACTS-OF-LIGHT-POLLUTION-ON-WILDLIFE-AMPHIBIANS-AS-MODELS.pdf
- Light Pollution Effects on Wildlife and Ecosystems - International Dark-Sky Association. (2016, September 12). International Dark-Sky Association. https://www.darksky.org/light-pollution/wildlife/
- Main, D. (2019, February 14). Why insect populations are plummeting—and why it matters. Animals; National Geographic. https://www.nationalgeographic.com/animals/article/why-insect-populations-are-plummeting-and-why-it-matters?loggedin=true
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Transcript
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| 0:00.0 | Hi, you're about to get smarter in just a few minutes with Curiosity Daily from Curiosity.com. |
| 0:06.5 | I'm Cody Gough. |
| 0:07.5 | And I'm Ashley Hamer. |
| 0:08.7 | Today you learn about why more humans are growing an extra artery, why it might be a good thing if you have an emotional |
| 0:15.2 | hangover, and the darker side of energy efficient LED street lamps. |
| 0:20.8 | Let's satisfy some curiosity? One big question we get on the show a lot is about whether humans are still evolving. |
| 0:29.0 | The answer is yes, and today I've got a perfect example of that happening. That is, more and more |
| 0:36.5 | adult humans possess an extra artery that we didn't have before. The artery is called the median artery and it tends to form |
| 0:45.6 | while we're still in the womb. It runs down the center of our forearms to bring |
| 0:50.3 | extra blood to our hands so they can get oxygen and nutrients while they're developing. |
| 0:55.5 | But it doesn't last long. |
| 0:57.6 | Like our baby fat and baby teeth, the median artery goes away pretty early in life. In fact, it typically disappears when we're only |
| 1:05.8 | eight weeks old, leaving the radial and ulnar arteries on either side to do the heavy |
| 1:11.3 | lifting of supplying blood to the hands. |
| 1:14.5 | These arteries are with you for your entire life. |
| 1:18.2 | At least, that's what used to happen. |
| 1:20.7 | A recent study found that more and more humans are holding on to their baby artery into adulthood. |
| 1:27.0 | In other words, it isn't going away anymore. |
| 1:30.0 | Here's what I mean. |
| 1:31.0 | Researchers have been watching how common this artery is since the 1880s. |
| 1:36.4 | Back then, 90% of people would lose the median artery, |
| 1:40.3 | and 10% would maintain it throughout life. |
... |
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