The field of computer science summarised. Learn more at this video's sponsor https://brilliant.org/dos

Computer science is the subject that studies what computers can do and investigates the best ways you can solve the problems of the world with them. It is a huge field overlapping pure mathematics, engineering and many other scientific disciplines. In this video I summarise as much of the subject as I can and show how the areas are related to each other.

#computer #science #domainofscience you can buy this poster here:
North America: https://store.dftba.com/produc....ts/map-of-computer-s
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A couple of notes on this video:
1. Some people have commented that I should have included computer security alongside hacking, and I completely agree, that was an oversight on my part. Apologies to all the computer security professionals, and thanks for all the hard work!
2. I also failed to mention interpreters alongside compilers in the complier section. Again, I’m kicking myself because of course this is an important concept for people to hear about. Also the layers of languages being compiled to other languages is overly convoluted, in practice it is more simple than this. I guess I should have picked one simple example.
3. NP-complete problems are possible to solve, they just become very difficult to solve very quickly as they get bigger. When I said NP-complete and then "impossible to solve", I meant that the large NP-complete problems that industry is interested in solving were thought to be practically impossible to solve.

And free downloadable versions of this and the other posters here. If you want to print them out for educational purposes please do! https://www.flickr.com/photos/95869671@N08/

Thanks so much to my supporters on Patreon. If you enjoy my videos and would like to help me make more this is the best way and I appreciate it very much. https://www.patreon.com/domainofscience

I also write a series of children’s science books call Professor Astro Cat, these links are to the publisher, but they are available in all good bookshops around the world in 18 languages and counting:
Frontiers of Space (age 7+): http://nobrow.net/shop/profess....or-astro-cats-fronti
Atomic Adventure (age 7+): http://nobrow.net/shop/profess....or-astro-cats-atomic
Intergalactic Activity Book (age 7+): http://nobrow.net/shop/profess....or-astro-cats-interg
Solar System Book (age 3+, available in UK now, and rest of world in spring 2018): http://nobrow.net/shop/profess....or-astro-cats-solar-
Solar System App: http://www.minilabstudios.com/....apps/professor-astro
And the new Professor Astro Cat App: https://itunes.apple.com/us/ap....p/galactic-genius-wi

Find me on twitter, Instagram, and my website:
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💥Accounting Cycle Cheat Sheet → https://accountingstuff.com/shop
🖊Accounting Practice Questions → https://accountingstuff.com/practice-questions

Would you like to know what Accounting REALLY MEANS? In this short tutorial we'll take 1 simple example and follow it through all 8 Steps of the Accounting Cycle - from start to finish - you'll build a solid understanding of all the Accounting Basics we encounter along the way. Stuff like the Accounting Equation, Debits & Credits, Double-Entry Accounting, T-Accounts, the Trial Balance etc.

If you're an Accounting Beginner, then I recommend watching this all the way through to the end - at least once - to get a complete picture of how Accounting works. Afterwards, you can jump into my Accounting Basics Playlist (see below) and explore every topic in more detail.

🎬LEARN ACCOUNTING BASICS FOR FREE
▪ The Full Playlist → https://www.youtube.com/playli....st?list=PL5zKSeS09l3
▪ Equity Video → https://youtu.be/Fr5oHEYrT2A

🔴Subscribe for more Accounting Tutorials → https://geni.us/subtothechannel

⏱️TIMESTAMPS
00:00 - Intro
00:16 - What is Financial Accounting?
01:11 - STEP 1: IDENTIFY TRANSACTIONS
01:29 - STEP 2: PREPARE JOURNAL ENTRIES
01:32 - What is a Journal Entry?
01:36 - What does a Journal Entry look like?
02:05 - What is Double Entry Accounting?
02:58 - What is the Accounting Equation?
04:17 - STEP 3: POST TO GENERAL LEDGER
04:22 - What is the General Ledger?
04:43 - Posting to Accounts
04:49 - What is an Account?
04:58 - The 6 Types of Account - Assets, Liabilities, Equity, Revenue, Expenses & Dividends
05:21 - What are T-Accounts?
06:00 - What does the General Ledger look like?
06:18 - STEP 4: UNADJUSTED TRIAL BALANCE
06:22 - What is a Trial Balance?
06:43 - How to build a Trial Balance
07:10 - Why is it called Trial Balance?
07:28 - STEP 5: POST ADJUSTING ENTRIES
07:32 - What are Adjusting Entries?
07:40 - IFRS vs GAAP
08:21 - What is the Accrual Method of Accounting?
08:41 - Adjusting Entries Example
10:14 - STEP 6: ADJUSTED TRIAL BALANCE
10:41 - STEP 7: CREATE FINANCIAL STATEMENTS
10:44 - What are Financial Statements?
10:59 - What are the three types of Financial Statements?
11:10 - What is the Balance Sheet?
11:28 - What is the Income Statement?
11:43 - Profit vs Cash Flow
11:54 - What is the Cash Flow Statement?
12:04 - Who would use Financial Statements?
12:34 - STEP 8: POST CLOSING ENTRIES
12:41 - What are Closing Entries?
12:51 - Closing Entries Example
13:10 - Post Closing Trial Balance
13:20 - THE ACCOUNTING CYCLE

🔎FAQ
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________________________
DISCLAIMER

Some of the links above are affiliate links, where I earn a small commission if you click on the link and purchase an item. You are not obligated to do so, but it does help fund these videos in hopes of bringing value to you!
________________________

#accounting #accountingbasics #accountingstuff

💥All in One Cheat Sheet Bundle → https://accountingstuff.com/shop

A collection of Accounting tutorials that I have put together over the past three years. I have arranged the topics into a logical, progressive order and removed all commercials, intros & outros for your viewing pleasure!

⏱️TIMESTAMPS
00:00 - Intro
00:58 - The Accounting Cycle - https://youtu.be/yYX4bvQSqbo
14:54 - The Accounting Equation - https://youtu.be/56xscQ4viWE
18:29 - Debits & Credits - https://youtu.be/VhwZ9t2b3Zk
23:27 - Why Debits & Credits Aren't Backwards - https://youtu.be/ddb65RudGi0
25:09 - T-Accounts - https://youtu.be/kA9snSvCgW8
34:35 - Journal Entries - https://youtu.be/Y-_Q3rANyxU
39:55 - What is an Invoice? - https://youtu.be/O6qtAT_SnIM
45:38 - What are Assets? - https://youtu.be/rOsuqG_J0t4
54:08 - What are Liabilities? - https://youtu.be/fKRwT10Sszc
01:03:45 - What is Equity? - https://youtu.be/Fr5oHEYrT2A
01:13:20 - The Cash Method of Accounting - https://youtu.be/8t9PFHlLLVI
01:17:49 - The Accrual Method of Accounting - https://youtu.be/C8UuX75ZarU
01:24:00 - Revenue Recognition Principle - https://youtu.be/37PPccwsYJI
01:25:53 - Inventory & Cost of Goods Sold - https://youtu.be/OB6RDzqvNbk
01:35:07 - My #1 Accounting Hack - https://youtu.be/5Y3wjH-6gHk
01:38:07 - Debits & Credits Practice Questions - https://youtu.be/yCOZ7aylC0c
01:43:23 - The General Ledger - https://youtu.be/Fu8zGee1SZw
01:52:25 - The Trial Balance - https://youtu.be/3_PfoTzSCQE
01:59:05 - Adjusting Entries - https://youtu.be/H0N7tvXuJlU
02:08:03 - Prepaid Expenses - https://youtu.be/RE7wrflFOGA
02:16:26 - Deferred Revenue - https://youtu.be/F1zNQ1wga7o
02:25:29 - Accrued Expenses - https://youtu.be/9aZ6CCj-ies
02:37:03 - Accrued Revenue - https://youtu.be/7ibN25VCvFg
02:44:50 - Depreciation - https://youtu.be/_pas1ETbrj8
02:55:51 - Straight Line Method of Depreciation - https://youtu.be/iruD9KTNnNc
03:02:28 - Income Statement - https://youtu.be/hrSUq4wcd0g
03:12:16 - How to Make an Income Statement - https://youtu.be/0--AvwZabIQ
03:17:04 - Balance Sheet - https://youtu.be/YZyBSU6YdmM
03:27:04 - How to Make a Balance Sheet - https://youtu.be/CMv1zlZhb4Q
03:33:51 - Trial Balance vs Balance Sheet - https://youtu.be/q7Nhj8vDD8M
03:39:20 - Intro to Cash Flow Statements - https://youtu.be/Xy-yDw0gsgc
03:49:24 - Direct Method Cash Flow Statement - https://youtu.be/KOR10VPsyO8
04:06:43 - Indirect Method Cash Flow Statement - https://youtu.be/8CH-6wdfz0Y
04:16:07 - How to Make a Cash Flow Statement - https://youtu.be/DiVPAjgmnj0
04:31:07 - The Key to Understanding Financial Statements - https://youtu.be/_F6a0ddbjtI
04:37:09 - Closing Entries - https://youtu.be/e1z2lpdQyGQ
04:50:22 - Outro

🔴Subscribe for more Accounting Tutorials → https://geni.us/subtothechannel

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🔎FAQ
▪ My Favourite Accounting Book for Beginners → http://geni.us/5mKR7m

🚶FOLLOW ME ON
▪ Instagram → https://www.instagram.com/accountingstuff
▪ TikTok → https://www.tiktok.com/@accounting_stuff
▪ Facebook → https://www.facebook.com/thisisaccountingstuff/

🎬LEARN ACCOUNTING BASICS FOR FREE
▪ The Full Playlist → https://www.youtube.com/playli....st?list=PL5zKSeS09l3

🎵MUSIC
▪ Lakey Inspired - Blue Boi → https://soundcloud.com/lakeyinspired/blue-boi
▪ Lakey Inspired - Last Night → https://soundcloud.com/lakeyinspired
________________________
DISCLAIMER

Some of the links above are affiliate links, where I earn a small commission if you click on the link and purchase an item. You are not obligated to do so, but it does help fund these videos in hopes of bringing value to you!
________________________

#accounting #accountingstuff #accountingbasics

⁣Gain a comprehensive understanding of SEO strategy, covering key elements such as crafting effective strategies, creating actionable roadmaps, leveraging competitive advantages, and presenting your plans to secure support and buy-in.

Gastroenterologists Dr. Sophie Balzora and Dr. Ugo Iroku debunk 13 myths about caffeine. They explain what decaf really means, how much caffeine is too much, and if caffeine affects your heart. They also talk about whether caffeine is good for you — plus ways it can actually be beneficial to your health.

Balzora is an assistant professor of medicine and a practicing gastroenterologist at NYU Grossman School of Medicine. She specializes in digestive conditions, colon cancer screening and prevention, and minority and women's health. You can learn more about her work here: https://nyulangone.org/doctors..../1487813994/sophie-m

Iroku is a gastroenterologist at Mount Sinai Hospital and New York Gastroenterology Associates. He has long-standing passion for combating health misinformation and for raising public health literacy. You can learn more about his work here: https://realdoctorugo.com/

0:00 Intro
0:25 Caffeine is bad for you
1:42 Caffeine will make up for lost sleep
2:43 Decaf coffee doesn't have caffeine
3:40 Drinking coffee will stunt your growth
4:46 Caffeine in soda is much less than caffeine in coffee
5:40 Caffeine detoxes your body
6:51 Caffeine dehydrates you
7:48 Caffeine is addictive
8:38 Having more than one cup of coffee a day is bad for you
9:38 You won't be able to sleep if you have caffeine at night
10:52 Caffeine can mess with your heart rhythm
11:52 Tea is healthier than coffee
13:18 The way you prepare your coffee doesn't matter

MORE DEBUNKED VIDEOS:
Cardiologists Debunk 12 Heart Myths | Debunked
https://www.youtube.com/watch?v=woh01kAbrTY
Dietitians Debunk 10 Sugar Myths | Debunked
https://www.youtube.com/watch?v=AM_Dhssz6AM
Dietitian Nutritionists Debunk 19 Diet Myths | Debunked
https://www.youtube.com/watch?v=7YBvKATG6OQ

------------------------------------------------------

#caffeine #debunked #scienceinsider

Science Insider tells you all you need to know about science: space, medicine, biotech, physiology, and more.

Visit us at: https://www.businessinsider.com
Science Insider on Facebook: https://www.facebook.com/BusinessInsi...
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Tech Insider on Twitter: https://twitter.com/techinsider

Doctors Debunk 13 Caffeine Myths | Debunked

Go to http://brilliant.org/BranchEducation/ for a 30-day free trial and expand your knowledge. The first 200 people will get 20% off their annual premium membership.

Have you ever wondered how video game graphics have become incredibly realistic? How can GPUs and graphics cards render such incredibly detailed scenes? Well, in this video we're going to explore how just a bunch of data in your computer gets turned into realistic graphics. Additionally, we'll take a quick look into Ray Tracing, DLSS or Deep Learning Super Sampling, and many other complicated aspects of video game graphics.

We at Branch Education love to play video games, so this video has been one of our favorite ones to make thus far. It's kind of like getting to look under the hood of your childhood car. Also, it was surprising that practically all video games use similar basic steps to render each frame. Furthermore, as a fun fact, to create this video our team used 1x 3090ti, 3x 3090s, and the model that we tore down was a 3090.

There are just sooooo many topics in the realm of computer graphics that we couldn't cover. If you're interested in part 2 where we'll cover things like UVs, Normal Maps, Shadows, Reflections, Specular Reflections, and much more, tell us in the comments.

Do you want to support in-depth engineering and technology education? Support us at: https://www.patreon.com/brancheducation

Website: https://www.branch.education
On Facebook: https://www.facebook.com/BranchEducation/

Table of Contents:
00:00 - Video Game Graphics
01:11 - Graphics Rendering Pipeline and Vertex Shading
04:16 - Video Game Consoles & Graphics Cards
05:06 - Rasterization
06:51 - Visibility Z Buffer Depth Buffer
10:03 - Pixel Fragment Shading
11:35 - The Math Behind Pixel Shading
14:05 - Vector Math & Brilliant Sponsorship
16:11 - Flat vs Smooth Shading
17:25 - An Appreciation for Video Games
17:58- Ray Tracing
18:45 - DLSS Deep Learning Super Sampling
19:06 - GPU Architecture and Types of Cores
20:06 - Future Videos on Advanced Topics
20:24 - Outro for Video Game Graphics


Key Branches from this video are: How do JPEGs Work? How does Computer Hardware Work?

Erratum:

Animation: Mike Radjabov, Prakash Kakadiya, Teddy Tablante
Script: Teddy Tablante
Twitter: @teddytablante
Modeling: Mike Radjabov, Prakash Kakadiya
Voice Over: Phil Lee
Sound Design: www.drilu.mx
Sound Effects and Music Editor: Raúl Núñez
Supervising Sound Editor and Mixer: Luis Huesca

Animation built using Blender 4.0.1 https://www.blender.org/

References:
The most important resource for making this video was Cem Yuksel [ https://www.youtube.com/@cem_yuksel ] a professor in the School of Computing at the University of Utah. His online course on computer graphics and interactive graphics was incredibly useful.

"NVIDIA Ampere GA102 GPU Architecture" Second-Generation RTX. NVIDIA Corporation 2021

Wikipedia contributors. "Computer Animation" "Computer Graphics". "CUDA". "Graphics Pipeline". "History of Computer Animation". "NVIDIA". "Rasterization". Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited December 21nd 2023

#graphics #gpu #algorithm

🎨 Master the Art of Analysis: 3 Steps to Understand Colour in an Artwork! 🌟Unlock the secrets of art and take your appreciation to the next level with our enlightening video! 🖼️✨In this video, we guide you through a step-by-step journey of colour analysis, helping you gain a deeper understanding of any artwork. Whether you're an art lover, student, or curious explorer, these four essential steps will transform the way you perceive and interpret art. 🧐📝0:19 1) Colour Schemes2:57 2) Colour Temperature3:58 3) Naturalistic or Unnatural Colours5:07 4) ApplicationImmerse yourself in the world of art and subscribe for more insights into the fascinating realm of creativity and expression. Art appreciation made easy! 🖼️🔍✨ #coloranalysis #artisticexpression #artlovers

View full lesson: http://ed.ted.com/lessons/what....-s-the-value-of-vita

Vitamins are the building blocks that keep our bodies running; they help build muscle and bone, capture energy, heal wounds and more. But if our body doesn’t create vitamins, how do they get into our system? Ginnie Trinh Nguyen describes what vitamins are, how they get into our bodies -- and why they are so crucial.

Lesson by Ginnie Trinh Nguyen, animation by The Moving Company Animation Studio.

View full lesson: http://ed.ted.com/lessons/the-....benefits-of-a-good-n

It’s 4am, and the big test is in 8 hours. You’ve been studying for days, but you still don’t feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep? Shai Marcu defends the latter option, showing how sleep restructures your brain in a way that’s crucial for how our memory works.

Lesson by Shai Marcu, animation by Javier Saldeña.

Businesses have always been looking for ways to sell us more things – which we may or may not need. As we learn more about the inner workings of the human brain, they are now venturing into a new realm on this quest – our subconscious minds.

We're destroying our environment at an alarming rate. But it doesn't need to be this way. Our new channel Planet A explores the shift towards an eco-friendly world — and challenges our ideas about what dealing with climate change means. We look at the big and the small: What we can do and how the system needs to change. Every Friday we'll take a truly global look at how to get us out of this mess.

► Check out our channel trailer: https://youtu.be/T8EiTHe6eXg

► Want to see more? Make sure to subscribe to Planet A!

#planeta #neuromarketing #consumerism

READ MORE

Blindsight: The (Mostly) Hidden Ways Marketing Reshapes Our Brains:
https://www.popneuro.com/book

Neuromarketing. What You Need to Know:
https://hbr.org/2019/01/neurom....arketing-what-you-ne

Neuromarketing and Ethics:
https://hbr.org/2019/01/when-n....euromarketing-crosse

Study: In-store music affects product choice:
https://www.nature.com/articles/36484


Reporter: Malte Rohwer-Kahlmann  
Camera: Henning Goll
Video Editor: Frederik Willmann
Supervising Editor: Kiyo Dörrer

Leslie Lamport revolutionized how computers talk to each other. The Turing Award-winning computer scientist pioneered the field of distributed systems, where multiple components on different networks coordinate to achieve a common objective. (Internet searches, cloud computing and artificial intelligence all involve orchestrating legions of powerful computing machines to work together.) In the early 1980s, Lamport also created LaTeX, a document preparation system that provides sophisticated ways to typeset complex formulas and format scientific documents. In 1989, Lamport invented Paxos, a “consensus algorithm” that allows multiple computers to execute complex tasks; without it, modern computing could not exist. He’s also brought more attention to a handful of problems, giving them distinctive names like the bakery algorithm and the Byzantine Generals Problem. Lamport’s work since the 1990s has focused on “formal verification,” the use of mathematical proofs to verify the correctness of software and hardware systems. Notably, he created a “specification language” called TLA+ (for Temporal Logic of Actions), which employs the precise language of mathematics to prevent bugs and avoid design flaws.

Read more at Quanta Magazine: https://www.quantamagazine.org..../bringing-mathematic

- VISIT our Website: https://www.quantamagazine.org
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Quanta Magazine is an editorially independent publication supported by the Simons Foundation https://www.simonsfoundation.org/

#computerscience #math

A comprehensive plan—with goals, initiatives, and budgets–is comforting. But starting with a plan is a terrible way to make strategy. Roger Martin, former dean of the Rotman School of Management at the University of Toronto and one of the world’s leading thinkers on strategy, says developing strategy means going outside an organization’s comfort zone and escaping the common traps of strategic planning.00:00 Most strategic planning has nothing to do with strategy.01:00 So what is a strategy?02:08 Why do leaders so often focus on planning?04:05 Let's see a real-world example of strategy beating planning.06:33 How do I avoid the "planning trap"? For more from Roger Martin on this topic, read, "A New Way to Think: Your Guide to Superior Management Effectiveness": https://www.amazon.com/New-Way....-Think-Management-Ef Harvard Business Review:https://hbr.org/https://www.li....nkedin.com/company/h up for Newsletters: https://hbr.org/email-newslett....ers#HarvardBusinessR #strategy #rogermartincopyright © 2022 Harvard Business School Publishing. All rights reserved.#strategicplanning #planning #business #explainer #success #howto

This budgeting method I talk about in today's video really changed the way I view my own finances. It's called the P&L Method, or running your life like you would a business. Every month, I have my own personal P&L sheet, and I've also created one for you guys so you can budget on your own today too.

The P&L Method Template: https://beacons.ai/humphreytalks/freedownloads

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Timestamps:
0:00 - Start Here
0:36 - Step 1: Being Aware
1:42 - Tracking Expenses Challenge
3:24 - Embarrassment & Finances
4:55 - 4 Things To Get Better
6:17 - THE BUDGETING METHOD
8:51 - Zero-Based Alternative
9:54 - How to Allocate Money
13:07 - Where People Get Stuck

PS: I am not a current Financial Advisor, any investment commentary are my opinions only. Some of the links in this description are affiliate links that I do receive a commission for & they help support the channel!

In this 3D animation, we explore the fascinating world of the digestive system. From the moment food enters our mouths to its transformation into vital nutrients, the video breaks down each stage with stunning visuals and clear explanations.

Timecodes:
0:00 Mouth
0:06 Esophagus
0:26 Stomach
1:26 Carbs vs. Proteins vs. Fats
1:42 Small Intestine
2:13 Large Intestine
3:03 Odor of Stool
3:25 Rectum
3:36 Next video

How the Digestive System Works | 3D Animation
Images/videos used under license from Shutterstock.com

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It would be a lot easier to study the science of dreaming if we weren’t asleep every time we did it. Why do we dream? What does dreaming do for our brains? How did dreaming evolve? Here’s a look at the current theories from psychology and neuroscience.

References:
Barrett, D. (2017), Dreams and creative problem-solving. Ann. N.Y. Acad. Sci., 1406: 64-67. https://doi.org/10.1111/nyas.13412
Carlo Cipolli, Roberto Bolzani, Cesare Comoldi, Rossana De Beni, Iino Fagioli, Bizarreness Effect in Dream Recall, Sleep, Volume 16, Issue 2, March 1993, Pages 163–170, https://doi.org/10.1093/sleep/16.2.163
Eagleman DM, Vaughn DA (2021). The Defensive Activation Theory: REM Sleep as a Mechanism to Prevent Takeover of the Visual Cortex. Frontiers in Neuroscience. 15:632853. doi: 10.3389/fnins.2021.632853
El-Solh, A. A. (2018). Management of nightmares in patients with posttraumatic stress disorder: Current perspectives. Nature and Science of Sleep, 10, 409–420.https://pubmed.ncbi.nlm.nih.gov/30538593/
Hughes, J. Donald. (2000). Dream Interpretation in Ancient Civilizations. Dreaming. 10. 7-18. 10.1023/A:1009447606158.
Káli, S., Dayan, P. Off-line replay maintains declarative memories in a model of hippocampal-neocortical interactions. Nature Neuroscience 7, 286–294 (2004). https://doi.org/10.1038/nn1202
Montangero, Jacques & Ivanyi, Corinne & Saint-Hilaire, Zara. (2003). Completeness and accuracy of morning reports after a recall cue: Comparison of dream and film reports. Consciousness and cognition. 12. 49-62. 10.1016/S1053-8100(02)00029-6.
Stickgold, R., Malia, A.; Maguire, D., Roddenberry, D., O'Connor, M. (2000). Replaying the Game: Hypnagogic Images in Normals and Amnesics. Science. 290 (5490): 350–353. doi:10.1126/science.290.5490.350.
Valli, K., Revonsuo, A., Pälkäs, O., Ismail, K. H., Ali, K. J., & Punamäki, R.-L. (2005). The threat simulation theory of the evolutionary function of dreaming: Evidence from dreams of traumatized children. Consciousness and Cognition, 14(1), 188–218. https://pubmed.ncbi.nlm.nih.gov/15766897/
van der Linden, S. The Science Behind Dreaming. Scientific American. July 26, 2011
Erin J. Wamsley, PhD, Karen Perry, MD, Ina Djonlagic, MD, Laura Babkes Reaven, MD, Robert Stickgold, PhD, Cognitive Replay of Visuomotor Learning at Sleep Onset: Temporal Dynamics and Relationship to Task Performance, Sleep, Volume 33, Issue 1, January 2010, Pages 59–68, https://doi.org/10.1093/sleep/33.1.59
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In this video, I flew out to Toronto to get the full story of Hush Blankets. Aaron and Leor started this business while working their 9-5's, and they made one of the craziest rebounds I've ever seen from an ecommerce business - the best part, Aaron shared exactly how they did it.

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An inside look at the basic systems that make up a standard car engine.

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One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

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There's a long-held myth that cracking your knuckles can damage your hands. The sound definitely might make people around you cringe, but what's making those noises, and is it actually bad for you?

There's a space in your joints filled with synovial fluid, a liquid that reduces the friction in your joints when you move. It contains gases (oxygen, nitrogen, and carbon dioxide).

When you pop a joint, you stretch out that space between the bones. That expanding space creates negative pressure, like a vacuum, that sucks in the synovial fluid. It forms bubbles, which then collapse, and that's what you hear.

Most medical sources agree that unless you experience pain when you pop your joints, you're probably fine to keep doing it. Researchers (including one man who cracked his knuckles on just one hand for 60 years) haven't established a connection between cracking your knuckles and arthritis.

One 1990 study of 300 people did find that cracking knuckles over a long period of time led to hand swelling and decreased grip strength, but there hasn't been any follow-up research on that.

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99% of all internet traffic – from this video to your Pokemon Go account to your family WhatsApp group – runs on a hidden network of undersea cables. Why should you care? Because modern life is increasingly dependent on those slinky subaquatic wires. And they get attacked by sharks from time to time.

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How The Internet Travels Across Oceans