#smarter

Daylight Saving Time 101 | National Geographic

About 70 countries around the world practice Daylight Saving Time. Find out who came up with the concept of Daylight Saving Time, where the time change was first enacted nationwide, and how some countries are attempting to eliminate it.

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Are “Free” Video Games Really Free? | Two Cents

So-called “free-to-play” video games are raking in record profits for game companies. How do they get gamers to overspend on something that’s technically free and what can you do to protect your quarters?

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The design tricks that keep skyscrapers from swaying | Vox

Skyscrapers are getting skinnier: As cities get denser, architects are designing builders that are taller and taller on smaller and smaller lots. And that poses one big problem: How do you keep them from swaying in the wind? Behind some of the most iconic shapes on our skylines  is a secret design language of architectural tricks —twists, holes, and setbacks— that keep buildings still.

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Why This 3D Light Printer Is A HUGE Game Changer | Seeker

Computed Axial Lithography is the first printer of it’s kind. It can shape objects, all-at-once, using specialized synthetic resin and rays of light.

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Stephen Hawking’s Final Theory on Black Holes | Physics Girl

What does Stephen Hawking’s last paper on black holes with soft hair say about the black hole information paradox? Paper source: https://arxiv.org/abs/1810.01847

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Can You Trust Kurzgesagt Videos? | Kurzgesagt – In a Nutshell

Can you trust our videos? How do we research them nowadays? And what about our older videos?

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Why parrots can talk like humans | Vox

Monkeys are our closest biological relatives, and they can’t speak. But parrots don’t seem to have a problem at all.In 2016 researchers released a study with an incredible headline: monkey vocal tracts are speech-ready. It showed that monkeys are held back from speech not by their bodies, but by their brains. But if that’s the case, what’s the deal with birds?

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Will there ever be a mile-high skyscraper? - Stefan Al | TED-Ed

Would a mile-high skyscraper ever be possible? Explore the physics behind some of the tallest buildings and megastructures in the world.

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Moon exploration is coming back in a big way | Verge Science

You might think of old Apollo missions as the heyday of moon exploration, but that may soon change. After years of relative quiet in lunar missions, many governments have their sights set on some exciting new science on Earth’s satellite. But this time, they’ll be joined by newcomers: private companies who see a fortune to be made there. Here’s what to look forward to.

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A Problem You’ll Never Solve | Vsauce2

Newcomb’s Paradox has confounded philosophers, mathematicians, and game players for over 50 years. The problem is simple: You can take Box A, which contains $1,000, *and* Box B, which contains either $0 or $1,000,000, or you can just take Box B. The right choice seems obvious – but there’s a catch.

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This Will Most Likely Kill You | AsapSCIENCE

This video is sponsored by Bill and Melinda Gates. Check out their 2019 annual letter here: https://b-gat.es/2MXD5Dy

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Is The iPhone Waterproof? Water Resistance Explained | CNBC

Are iPhones waterproof? A few years ago companies like Apple started advertising their phones as being “water resistant.” They also started including an “IP rating” in many of their devices’ specifications. But what does any of that actually mean, and most importantly, can you trust your phone in the water?

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Who actually pays for your credit card rewards? | Vox

Here’s why you’re paying for credit card rewards — even if you use cash.Shoppers love credit card rewards. Banks promise offers of cash back, bonus miles, and cash bonuses to get you to sign up and spend. In 2018, 92% of all credit card spending was made on a rewards card. 

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3D printing with light: ‘The replicator’ is here | nature video

Researchers have developed a new technique to 3D print entire objects in one go, by solidifying liquid resin with projected light. 

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Why Twisted Light Holds the Key to Radically Faster Internet | Seeker

With this new nanophotonic device, scientists might have just unlocked how to harness the data transfer potential of “twisted light”.

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Loneliness | Kurzgesagt – In a Nutshell

Everybody feels lonely sometimes. But only few of us are aware how important this feeling was for our ancestors - and that our modern world can turn it into something that really hurts us. Why do we feel this way and what can we do about it?

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Inside the World’s Toughest Adventure Race | National Geographic

In Oman, competitors gather from across the globe to run a near impossible 87-mile ultra-marathon. Follow as racers face rocky terrain, soaring temperatures and 26,000 feet of elevation gain over the course of the grueling route.

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Magnetic Micro-Robots | Veritasium

Tiny robots activated by magnetic fields may be used in future biomedical procedures. Research Referenced in this video: T. Xu, J. Zhang, M. Salehizadeh, O. Onaizah and E. Diller, Millimeter-scale flexible robots with programmable three-dimensional magnetization and motions. Science Robotics. 4, eaav4494 (2019). http://robotics.sciencemag.org/lookup… H. Xie, M. Sun, X. Fan,  Z. Lin, W. Chen, L. Wang, L. Dong, and Q. He, Reconfigurable magnetic microrobot swarm: Multimode transformation, locomotion, and manipulation. Science Robotics. 4, eaav8006 (2019). http://robotics.sciencemag.org/lookup… G. Hwang, A. J. Paula, E. E. Hunter, Y. Liu, A. Babeer, B. Karabucak, K Stebe, V. Kumar, E. Steager, and H. Koo, Catalytic antimicrobial robots for biofilm eradication. Science Robotics. 4, eeaw2388 (2019). http://robotics.sciencemag.org/lookup…

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First Images of Black Holes! | Veritasium

The Event Horizon Telescope Collaboration observed the supermassive black holes at the center of M87 and our Milky Way galaxy (SgrA*) finding the dark central shadow in accordance with General Relativity, further demonstrating the power of this 100 year-old theory.

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How to Understand the Image of a Black Hole | Veritasium

We are about to see the first image of a black hole, the supermassive black hole Sagittarius A* at the center of the Milky Way galaxy. But what is that image really showing us? This is an awesome paper on the topic by J.P. Luminet: Image of a spherical black hole with thin accretion disk Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 228-235 https://ve42.co/luminet

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Immune cells tackle a human obstacle course | nature video

Immune cells inside the body need to make their way through densely packed tissues, squeezing through gaps and finding the most efficient route. During metastasis, cancer cells may make use of a similar type of locomotion. Now, experiments reveal how the cells probe different paths and use their bulky nucleus to gauge the size of gaps. Read more about this research: https://www.nature.com/articles/s4158…

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Why Do Compressed Air Cans Get Cold? | minutephysics

This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is under pressure and boils off when the pressure lowers, and energy lost to the latent heat of vaporization cools the can a lot.

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This is the fifth video in my Amazon Gift Cardcontest.

Manipulating the YouTube Algorithm - (Part 1/3) | SmarterEveryDay

My first video of a 3 part series on “coordinated inauthentic behavior”. Thanks to ExpressVPN for sponsoring this series.Renée Diresta is a Mozilla Fellow in Media, Misinformation, and Trust, where she researches unintended consequences of algorithms and works towards helping machines make better decisions. Renee also writes about disinformation and the changing face of information war — check out her essay “The Digital Maginot Line” (https://www.ribbonfarm.com/2018/11/28…) — and is a contributor to Wired Ideas (https://www.wired.com/author/renee-di…).

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This is the fourth video in my Amazon Gift Cardcontest.

What If We Detonated All Nuclear Bombs at Once? | Kurzgesagt – In a Nutshell

What happens if make a huge pile from all 15,000 nuclear bombs and pull the trigger? And what happens if we make an even bigger pile?

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The History of Video | Veritasium

I always wanted to know why film looked better than video. Moving electronic images have as long a history but were invented for a different purpose. This video was sponsored by B&H Photo: https://www.bhphotovideo.com

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The Paradox Paradox | Vsauce3

Is time travel a paradox in itself ? And what kind of time travel paradoxes are there ?

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This is the first video in my Amazon Gift Cardcontest.

Can Humans Sense Magnetic Fields? | Veritasium

Research has found human brains can pick up on rotations of geomagnetic-strength fields as evidenced by drops in alpha wave power following stimulus. For more, see https://ve42.co/magneto

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A 5G World Is on the Horizon, But How Will It Work? | Seeker

The rumors of a 5G wireless network, with the fastest connectivity we’ve ever experienced, is finally coming this year. Read More: Qualcomm already has a new 5G chip that promises sleeker, long-lasting phones https://www.cnet.com/g00/news/qualcom…

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How Tech Cures Pain Without Opiates | CNBC

Living in poverty or rural areas increases the odds of suffering from chronic pain, and one-fifth of adults in the U.S. live with the condition, according to a new study from the Centers for Disease Control and Prevention.

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Check out Quantum Questions for some great physics and science stuff.

I chose to give @quantum-questions a shout out for their big support over the last weeks. They got my number one supporter these days.

How to make inverted bubbles | Steve Mould

You can make a movable hole in soap film with a loop of thread. It’s surprising when you first see and it’s fun to think about why it behaves the way it does. It’s also a useful metaphor for cell membranes so I explore that a little bit too.

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How To Make A Cartesian Diver | DONG

A tutorial for a home made pressure measurement device.

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How tall can a tree grow? - Valentin Hammoudi | TED-Ed

What makes a tree grow tall? And do trees ever stop growing? Explore how photosynthesis and gravity can affect and limit the height of trees.

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How Flexible Machines Could Save The World | Veritasium

I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell: https://www.compliantmechanisms.byu.edu At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.

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Share Thy Knowledge

“In vain have you acquired knowledge if you have not imparted it to others” - Deuteronomy Rabba