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Escalator Etiquette is Inefficient

Escalator Etiquette is Inefficient

Cheddar gives us a brief history of the escalator before explaining why the unspoken escalator rule of walking on one side and standing on the other needs to be abolished. Research shows how the right way is to have both lanes standing only.

Training for Movie Gunfights

Training for Movie Gunfights

Insider spoke with Andreas Petrides, founder of the British Action Academy. Among other things, the school teaches actors and stuntmen how to shoot different kinds of firearms in different stances. Reacting to being shot is also part of the course.

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How Tall Can a Tree Grow?

How Tall Can a Tree Grow?

Californian sequoia trees have been known to grow to heights over 400 feet. But that’s about where they top out. TED-Ed’s Valentin Hammoudi explores some of the biological and physical constraints which may mean that’s the tallest a tree ever could be.

Making Cleaners from Scratch

Making Cleaners from Scratch

How to Make Everything gathered or made various cleaners from scratch – pumicite, borax, baking soda, vinegar, oxalic acid, bleach, lye, acetone, and ethanol. But before that, he had an interesting conversation with someone who cleans crime scenes for a living.

The Golf Ball That’s Too Good

The Golf Ball That’s Too Good

Technology is stretching the boundaries of sports. Innovation is normally good, but at what point does it become cheating? It’s a question that’s been asked for decades when it comes to golf balls, and the Titleist V1 Pro brought the debate back.

Raspberry Pi 3B+ Starter Kit & Training

Want to build your own electronics projects? With this course and hardware combo kit, you’ll get everything you need, including a Raspberry Pi 3B+ computer, 37 sensors, and Raspberry Pi development training. Grab this great deal in The Awesomer Shop.

Flexible Machines

Flexible Machines

Veritasium spoke with Professor Larry Howell about flexible machines, aka compliant mechanisms. You’d think that a machine that deforms, bends or flexes would be a dud, but these mechanical marvels are actually tough, reliable and cheap to produce.

How Memorization Works

How Memorization Works

If someone tells us a phone number, we have to work hard to remember it. On the other hand, there’s a guy out there who memorized Pi to 70,000 digits. In this video, Verge Science explores the different kinds of storage our brains have, and how to optimize them.

How Freight Trains Connect the World

How Freight Trains Connect the World

In the world’s top economies, passenger trains have expensive tickets. Freight trains, on the other hand, move cargo at incredibly cheap rates. Wendover Productions explains why trains are more efficient than cargo trucks at moving goods across the Earth.

Ghost Vocals Explained

Ghost Vocals Explained

We always assumed that the phantom vocal sounds we hear in some songs were intentionally placed there, but You Can’t Unhear This‘ explains how that’s not always the case, and how sometimes they’re simply a remnant of old school studio recording.

Misery was

Misery was

(PG-13: Language) Exurb1a rushes through evolution and genetics to share a thought: if mental illnesses can be genetically edited out of us, should we do it? It’s hard to say without knowing the consequences, but a world where misery is extinct certainly sounds wonderful.

Can You Trust Kurzgesagt?

Can You Trust Kurzgesagt?

We often feature videos from Kurzgesagt. Like many of you, we take what they say at face value. But it’s always smart to question things. Now, the channel offers insight into their research and writing process, admitting to mistakes and biases along the way.

Why Horror Movies Are Different Now

Why Horror Movies Are Different Now

(Gore) Wisecrack gives us a brilliant crash course on the history of horror films, and why their topics and tropes have changed across the decades, from pre-World War I films to today’s social and post-apocalyptic craze.

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How Your Dog’s Nose Knows

How Your Dog’s Nose Knows

Dogs are known for their impressive olfactory systems, and their ability to suss out all kinds of minute scents. In this clip from Deep Look, we learn how researchers are working with rescue dogs to better understand how their scent tracking abilities really work.

The Philosophy of Mob Psycho 100

The Philosophy of Mob Psycho 100

“Fight on! Fight on!” Made by the creator of One Punch Man, the hilarious anime Mob Psycho 100 is also about the struggles of a character with god-like powers. But as Wisecrack explores, the lesson here is about hard work and realizing one’s place in the world.

How Much Water Is on Earth?

How Much Water Is on Earth?

It’s been drilled into our heads that the majority of Earth is covered in water, but just how much is there? Wren of Corridor Crew provides some great visualizations to give us a better idea of the volume of H2O, and when packed into a sphere, its size is surprising.

What the #[email protected]!% Are These?

What the #$@!% Are These?

While we’re perfectly content to use actual swear words, for many years, they’ve been off-limits for use in most public-facing entertainment. Vox looks back at how random punctuation marks became the universal symbol for so-called “obscene” words.

The Hong Kong Handover

The Hong Kong Handover

For over 150 years, Hong Kong was under British rule. When the terms of an agreement expired, it was returned to China. But how does a city with over 7.4 million people change countries? Wendover Productions explains some of the finer points of the transition.

How Loneliness Works

How Loneliness Works

Kurzgesagt takes a break from its lesssons on theoretical science to focus on something a little closer to home – the sense of feeling alone or disconnected from people, a sociological problem that’s been disturbingly on the rise as the world has modernized.

MP40.

MP40.

Ahoy resumes his engaging series on firearms with the MP40. Created in Nazi Germany, this submachine gun became both a symbol of evil and rebellion in pop culture. Despite its brief real world usage, it has become one of the most recognizable guns in shooters.

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Why Avocados Shouldn’t Exist

Why Avocados Shouldn’t Exist

Whether on a sammie with bacon, chicken and cheese, or in a spicy guac, we delight in our delicious avocados. But this tasty and nutritious natural treat might not even exist today if it weren’t for some prehistoric farmers who saved them from extinction. SciShow explains.

Building the First Subway

Building the First Subway

These days, those of us in big cities take subways for granted. But in the 1860s, the idea was just being tested for the first time. London, England’s underground project wasn’t exactly easy, but its impact on urban development would be felt to this day. TED-Ed explains.

Brilliant Tech Innovations in Film

Brilliant Tech Innovations in Film

For an art form that’s so dependent on technology, movies and the film industry have lots of inventions and ideas for which to be thankful. But CineFix thinks these three developments in particular had the most impact on filmmaking over the years.

How Punk Became Punk

How Punk Became Punk

(PG-13: Language) Punk rock shook up the music scene back in 1976, but “proto-punk” bands dating all the way back to the late 1950s defined the genre without even knowing it. Trash Theory looks back at the history of punk rock, and the roots of its anti-establishment sounds.

How Animorph Covers Were Made

How Animorph Covers Were Made

Animorphs’ book covers are more famous than the actual stories. Lazy Game Reviews got his hands on the software that artist David Mattingly used for his covers. But due to the software’s limitations, he painted about half of each cover to make them look, uh, better.

How Gorilla Glass is Made

How Gorilla Glass is Made

Up until the mid-2000’s, the displays on devices were mainly covered with plastic. Then in 2006, Steve Jobs asked Corning to create a durable and scratch-resistant glass, and Gorilla Glass was born. Here’s how Corning makes its money-making material.

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