Earth's Atmosphere May Be Rusting the Moon

Curiosity Weekly

Warner Bros. Discovery

Science

4.6 • 964 Ratings

🗓️ 12 October 2020

⏱️ 12 minutes

🔗️ Recording | iTunes | RSS

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Summary

Learn why the concept of zero is newer than you might think, how you can worry more productively, and why the Earth’s atmosphere might be rusting the moon.

The Concept of Zero Is Newer Than You'd Expect by Reuben Westmaas

Matson, J. (2009, August 21). The Origin of Zero. Scientific American. https://www.scientificamerican.com/article/history-of-zero/
What is the origin of zero? How did we indicate nothingness before zero? (2007, January 16). Scientific American. https://www.scientificamerican.com/article/what-is-the-origin-of-zer/
Szalay, J. (2017, September 18). Who Invented Zero? Livescience.Com; Live Science. https://www.livescience.com/27853-who-invented-zero.html
Devlin, H. (2017, September 13). Much ado about nothing: ancient Indian text contains earliest zero symbol. The Guardian; The Guardian. https://www.theguardian.com/science/2017/sep/14/much-ado-about-nothing-ancient-indian-text-contains-earliest-zero-symbol
Brahmagupta: Mathematician and Astronomer. (2020, February 20). The Story of Mathematics - A History of Mathematical Thought from Ancient Times to the Modern Day. https://www.storyofmathematics.com/indian_brahmagupta.html

How to Worry More Productively by Kelsy Donk

Ro, C. (2020). The surprising upsides of worrying. Bbc.Com. https://www.bbc.com/future/article/20200824-why-worrying-isnt-as-bad-as-you-think
Anisa Purbasari Horton. (2018, March 20). How I Learned To Worry Productively. Fast Company; Fast Company. https://www.fastcompany.com/40543707/how-i-learned-to-worry-productively
Skwarecki, B. (2017, March 20). How to Worry Productively. Vitals; Vitals. https://vitals.lifehacker.com/how-to-worry-productively-1793456809
What is Productive Worry? (2012). Psychology Today. https://www.psychologytoday.com/us/blog/anxiety-files/200805/what-is-productive-worry

Earth's Atmosphere May be Rusting the Moon by Grant Currin

Has Earth’s oxygen rusted the Moon for billions of years? (2020). EurekAlert! https://www.eurekalert.org/pub_releases/2020-09/uoha-heo083120.php
Li, S., Lucey, P. G., Fraeman, A. A., Poppe, A. R., Sun, V. Z., Hurley, D. M., & Schultz, P. H. (2020). Widespread hematite at high latitudes of the Moon. Science Advances, 6(36), eaba1940. https://doi.org/10.1126/sciadv.aba1940
Kramer, M. (2020, September 8). Researchers find rust on the Moon. Axios; Axios. https://www.axios.com/moon-rust-4a473774-6aa4-4b25-994c-7ba3f032d307.html
NASA - The Moon and the Magnetotail. (2020). Nasa.Gov. https://www.nasa.gov/topics/moonmars/features/magnetotail_080416.html

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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.
0:06.7	I'm Ashley Hamer.
0:07.8	And I'm Natalia Reagan.
0:08.8	Today you learn why the concept of Zero is newer than you might think, how you can worry more productively and why
0:14.8	Earth's atmosphere might just be rusting the moon. Let's satisfy some curiosity.
0:19.7	When you were a little kid you didn't need math class to know that if you had four
0:24.6	chocolates and you ate four chocolates you'd have nothing left but sadness.
0:28.9	But though even small kids can understand nothing, the concept of zero is actually a bit more advanced.
0:36.8	It's so advanced, in fact, that by 1200 CE, it had just barely reached Europe.
0:43.0	Here's the reason why Zero is a lot newer than you'd expect.
0:47.0	Plenty of early cultures had a concept of nothing.
0:50.0	Like, take the earliest known counting system, devised by the Sumerians.
0:55.0	At first, they would use a blank space to indicate nothing.
0:58.0	Eventually, they substituted this with a pair of angled wedges.
1:02.0	Similar placeholders for an empty value can be found in other
1:05.4	counting systems, including those of the Mayans and the Babylonians. But most scholars agree
1:11.0	that Zero as a mathematical concept originated in India.
1:15.8	The earliest use of the round symbol that would become Zero happened in the third or fourth
1:20.9	century's CE in a merchant's called the Bakschale manuscript.
1:25.7	Just a few hundred years later in the seventh century, legendary mathematical scholar Brahma Gupta wrote the earliest surviving explanation of how
1:35.3	zero works.
1:37.1	Adding or subtracting zero from a number leaves the number unchanged, while any number multiplied
	...

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