So far, this has happened only five times. Will there be a sixth? We'll have to wait 2.3 years to find out. Meanwhile, let's get to what matters: the perfect box, other devastating epidemics, the hidden side of the moon, and the blue lava volcano, among many, many other things.

Recommended Links of the Week (No. 555)
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The bacteria that stick to your hands after different hand-washing methods, in a single image: "One of the basic hygiene measures recommended to prevent coronavirus infection is as simple as washing your hands. However, as the cover image shows, it’s important to do an 'adequate' hand wash. The test in the image was performed with a Glo Gem cleaning kit, a well-known hand hygiene gel used as a visual aid in hygiene training; for example, it has been used to train nurses who work with Ebola patients."

What the visual language of comics does to your brain: "According to comic theorist Dale Jacobs, these formats tell stories using a sophisticated language in which words combine with images, color, design, sound effects, composition, body language, or facial expressions to convey meaning. The result is the activation of the same cognitive processes we use to understand more complex texts."

Does the perfect box exist? This is how a mathematician finds it: "Recently I saw on social media the following image of a cube with three lengths with square root expressions (note that only two of them are actually irrational numbers): As a curiosity, that's fine, but what's really interesting is not this, but answering this seemingly simple question: Does a perfect Euler brick exist?"

The fabulous animal orchestra

Devastating historical epidemics not so well known: "Since I try to avoid the generic approach of other websites to talk for the umpteenth time about the Black Death or the Spanish flu, I prefer to write about epidemics that I think are less known to the public (...). Therefore, this post touches on topics that in one way or another relate to a recurring reality, whether because of the epidemics that threaten to spread or because of those who doubt the measures that have made many of them history."

When do people born on February 29 have birthdays, and other curiosities about leap years: "But when is the birthday of someone born on February 29? Well, as a Galician would say, it depends. It especially depends on the country where you were born. In Spain, those born on that date officially celebrate their birthday on February 28, that is, Pedro Sánchez came of age at midnight on February 27-28, 1990."

Envy and the Solomon syndrome: "To this day, this study continues to fascinate new generations of researchers of human behavior. The conclusion is unanimous: we are much more conditioned than we believe. For many, social pressure remains an insurmountable obstacle. Asch himself was surprised to see how wrong he was when he affirmed that human beings are free to decide our own path in life."

Rube Goldberg machine with transparent ball

China reveals what the hidden side of the Moon is made of: "A small Chinese robot reveals today, thanks to a radar that allows it to explore the lunar subsurface, what the interior of the far side of the Moon is made of. The level of detail is unprecedented and has allowed reconstructing the past of our satellite and locating the debris from an asteroid impact that happened 3.2 billion years ago, when life on Earth was just beginning to emerge."

William James Sidis: the sad life of the most intelligent man in history: "'I want to live a perfect life,' William James Sidis once said. 'The only way to achieve it is through isolation, through solitude. I have always hated crowds. The IQ of an average adult is 90 to 110. An above-average person measures 111 to 120. A gifted person (6 percent of the world's population) ranges from 121 to 130. William James Sidis had 300.'"

The great horse manure crisis: "The problem was curious. The animals pulling carriages left manure on the city streets. These excrements, for the good of everyone, had to be removed, but in that street cleaning process, carriages and horses were used again. That is, the cleaning method itself generated waste. There was a time when horses even knew how to add, they were everywhere."

It's lying to you

The kings of 'farming', the young people who make a living playing video games: "The term comes from the English "farming" (cultivate), a word used in the video game world to refer to this practice. In Venezuela, mired in a severe economic crisis and where, according to the United Nations, almost a third of the population lives in a situation of food insecurity, there are young people who have found in this an alternative to their poor job prospects."

Kawah Ijen, the fire of the gods. This is the incredible volcano that emits blue lava: "A few minutes after 6 p.m., on the horizon, the traveler can enjoy a unique landscape, but he doesn't know that a surprise still awaits him. Indonesia is considered one of the places with the greatest seismic activity on Earth, where in the middle of the Pacific Ring of Fire more than 140 volcanoes remain active. The view is spectacular, but one of those craters hides a secret that is only discovered at night: the blue fire."

The slave system in the United States: "However, something that seems old and obsolete to us, that deeply attacks human morals and ethics, enjoyed until not long ago an important validity in one of the countries that now presents itself as the guardian of the new world order: the United States of America. In a period when Europe was separating itself from that old institution due to the progressive consolidation of the capitalist system and the industrial revolution, in a part of North America the trade of black people was reaffirmed, with no more rights than those that an object might have, a simple property of the slave owner who, protected by the Constitution of 1787, defended his right to own slaves."

Affetto, the terrifying baby robot

Videos

Spray against troublemakers, Silent Hill 2 VR, a car falls 45 meters onto a trampoline, molten aluminum vs. an ice cube, I don't know but I liked it, the bouncer, termite inside a fire-resistant box, how to start a fire with your hands, professional basketball player vs. a team of amateurs, the VHS is ruining the kids!, stopping a laser in midair, revealing negatives from 120 years ago, Call of Duty: Modern Warfare Tamagotchi style, the world's largest cheese competition, the evolution of cartoon music, the intimacy of otters, hacked the cameras of a fraud call center, rescues a surfer from a deadly wave, how rich is Jeff Bezos explained with rice, Jetman in Dubai 4K, how to land the Space Shuttle from Space, ambidextrous artist draws with both hands, the new panorama of the Mars Rover, Nurses singing "Die bacteria die" and the time-travel short "Dirty Machines: The End of History".

How to make the record paper airplane

Galleries

The illusion of the boxes that don't move, Takehiro Kishimoto's carved fruits, abandoned places lit for the photo, unexpected things, Christopher Lloyd with Michael J. Fox, very dirty puppies, the worst book covers on Amazon, dog emotions, places that become magical at night, the best photos of Sony World Photography 2020, failed taxidermy, the beauty of static in photographs, the terror of GeDogFX, more photos of Gia Carangi, the Animated Dump, and the Weekly Visual Dump.

https://old.neoteo.com/creepypasta-scp-009/

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