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Between the risks of injury and the often precarious locations, parkour and freerunning can be pretty exciting to watch. SciShow goes beyond the athleticism to the physics of the sport, digging into the things that need to happen mechanically in order to climb walls, vault over obstacles, and land without trauma.
If you’ve ever gotten gored by your adorable little kitty cat’s hook-like claws, you know how sharp they can be. Science educator Kyle Hill explains the biology behind cat claws, what makes them different from our fingernails, and how they manage to stay so razor-sharp.
Each of our bodies is teeming with trillions of bacteria at any given moment. Thankfully, these microscopic organisms generally work in harmony with our cells. But how did evolution prevent bacteria from becoming as big as a whale? Kurzgesagt explores this question in the latest episode of their Life & Size series.
We all know that bees make their honeycombs by creating nearly perfect hexagonal cells. But why is that they chose hexagons to do their building? CGP Grey looks into the power and strength of this basic six-sided form, especially when it comes to tiling efficiency.
(PG-13: Language) For decades, Ronald McDonald was one of the world’s most recognized brand mascots. But something happened when 2016 hit, and the once-ubiquitous character all but vanished from the scene. Ordinary Things recalls the history of the burger clown, from his creepy early beginnings to his eventual downfall.
Despite many people despising the fake, sugary flavor of candy corn, it’s still a wildly popular Halloween treat. Mental Floss explores the history of this divisive, tri-colored candy and why it’s so closely associated with the holiday. We never thought about it before, but candy corn has real corn in it, sorta.
With eight engines, nine wings, and room for 100 passengers, this early 20th-century flying machine was designed to be the first mass-passenger aircraft capable of transatlantic flight. Mustard looks back at the history of this unusual airplane, and what ended up being its downfall.
Christened in 1940, the S.S. America was a glorious oceanliner that could carry 1200 passengers in luxurious surroundings. But a series of events led the vessel to eventually being abandoned and becoming a rusted-out shipwreck. Bright Sun Films looks back at the unfortunate history of this once-impressive cruise ship.
Every living thing on Earth is made up of mix of chemical elements, including carbon, hydrogen, oxygen, and nitrogen. This animated short from NM State University’s Learning Games Lab provides a laypersons’ explanation of how chemical bonds create life and provide the nutrients needed to keep it going.
There are a number of great American cars manufactured in Canada. In total, our neighbors to the North produced 2.4 million cars in 2019 alone. But for some reason, Canada no longer has any of its own major car brands. Donut Media digs into this puzzling question and attempts to provide some answers.
Imagine, if you will, that the entire 4.5 billion year history of the Earth was collapsed down to a 24-hour single day. Bright Side’s educational video does just that, taking significant events in the development of our world and giving us a relative sense of how closely together they played out.
Ready to have your mind blown? In much the same way as a Christopher Nolan movie, PBS Space Time host Matt O’Dowd is here to mess with our understandings about time, as he explores theories that look at the relationships between the past, the present, and the future.
The speed of light is pretty darned fast, but given just how far the Earth is away from the Sun, its light doesn’t get here instantly. It’s Okay to Be Smart teaches us how it’s not just a simple math equation, but complex astrophysics explain how sunlight is much older than you’d think.
Howdy, folks! It’s science time! Veritasium explains how gravity isn’t a force according to the General Theory of Relativity. He then demonstrates how the way we are moving through space-time while standing on Earth isn’t really any different from what an astronaut experiences as their rocket accelerates through space.
To celebrate the release of their Human Era Calendar for the year 12,021, Kurzgesagt looks to the distant future to imagine what it might be like for future archeologists as they attempt to reconstruct our present, along with the challenges we face figuring out our past.
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.
Despite the massive number of rodents alive today, none of them have horns. But millions of years ago, some did. The so-called “horned gopher” had a pair of bony protrusions on its head, making it look pretty silly if you ask us. PBS Eons explains their purpose, and how they might still be useful if rodents had them today.
It seems that distorted information and falsehoods are more common than the truth these days. But why is it that humans fall for such misleading information? TED-Ed speaker Joseph Isaac looks at one specific case where something treated as fact has been widely believed, despite the facts saying otherwise.
Potholed roads can be a major annoyance, or in severe cases, they can cause vehicle damage or accidents. Why is it that with all of the advancements in materials science, we still get roads with giant divots? Grady Hillhouse of Practical Engineering explains the uphill battle faced by transportation departments around the globe.
Kurzgesagt introduces us to the oecophylla weaver ant. These long-legged insects dwell in tropical jungles, building incredible colonies that spread upwards and sideways between trees. They’re not only incredibly industrious, they’re fierce warriors and defenders of their kingdoms.
We all have a pretty specific image in mind when someone says “caveman.” But did these thick-browed, cave-dwelling early humans exist, or is this just a caricature created by popular culture? Today I Found Out digs into what we now know about the Stone Age, and how closely it matches up with these stereotypes.
Captain Disillusion is back with another one of his great educational videos about imaging technology and terminology. This time, he explains how our brains and eyes perceive color, and how computers can be used to manipulate hue, saturation, and brightness to our every whim.
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