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My hypothesis is that the algorithm, rather than viewer preference, drives views on the site. As the algorithm shifts, various YouTubers experience burnout (as what used to work no longer works) and right now click-through rate is the key metric. So clickable titles and thumbnails are the only way to get a lot of impressions and hence views - they are the only way to go viral. This leads me to wonder which audiences will become most prevalent on the site and if there will even be a place for educational content. In the long-term, hopefully YouTube is able to measure satisfaction through surveys and other metrics to ensure an optimal experience for everyone on the site.
Flipchart artwork by Maria Raykova
Filmed by Raquel Nuno
Thumbnail by Ignat Berbeci
Scientists have combined ultrasound, viruses and synthetic drugs to control regions of the brain.
Check out Skillshare: https://skl.sh/veritasium (first 500 get 2 months free)
Special thanks to Prof. Mikhail Shapiro and Dr. Jerzy Szablowski:
http://shapirolab.caltech.edu
Human brains are complicated - the most complicated thing in the known universe, many people say. So far we understand little - just that certain regions of the brain appear to be involved in certain activities and certain disorders. In extreme cases this has led to the practice of removing sections of the brain, or using electrodes or optical fibers to control activation rates. What is unique about this approach is it offers a way to turn on and off specific brain regions without invasive surgery. It has promise because it combines existing technologies: micro-bubbles, ultrasound, synthetic viruses, and synthetic drugs to achieve this goal.
Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd
Animations and editing by Alan Chamberlain
Music from http://epidemicsound.com "Experimental1"
Negative Pressure Exists! http://bit.ly/TFilQ8
Vsauce's Space Straw: http://bit.ly/XubIm3
Smarter Every Day's Prince Rupert's Drop: http://bit.ly/10VQBGW
ViHart's Optimal Potatoes: http://bit.ly/14egJoe
Thanks to Questacon for filming! Check out their slow-mo playlist: http://bit.ly/ZoWFGR
Science Alert brings science to your news feed: http://on.fb.me/14ehuxA
Music by Kevin Mcleod (http://incompetech.com): Pale Rider & The Cannery
It takes the moon about 27 days to orbit the Earth. What makes it go round? It is the gravitational attraction of the Earth on the moon. Due to the moon's velocity, the Earth keeps pulling the moon towards it without the moon actually getting closer to the Earth. This is similar to how satellites orbit the Earth.
In Queenstown, New Zealand, I jumped off the Kawarau Bridge - the site of the first bungy jump. It was a thrilling experience, preceded by a terrifying, gut-wrenching half hour wait. All in all an awesome adventure, even if the woman fitting my harness didn't know the first thing about the acceleration of free-falling bodies.
The aurora borealis or northern lights is one of the most spectacular natural displays on the planet. Theories about its origins have been debated for centuries and common misconceptions persist that the aurora is the sun's rays scattered off ice crystals in the high atmosphere. In truth, the light is created more than 100km above Earth's surface as high speed electrons and protons ejected from the sun in a solar flare or coronal mass ejection collide with air molecules in the upper atmosphere. The charged particles from the sun excite air molecules which then de-excite by emitting light. The display is most common around the north and south poles because the Earth's magnetic field deflects the solar wind from the equator to the poles. Here the magnetic field dips towards the Earth's surface, channeling the charged particles into the atmosphere.
Music is by Kevin MacLeod http://incompetech.com, the song is called Mirage
When is the acceleration (rate of speeding up or slowing down) greatest during a bungy jump?
How to light a candle without touching a flame to the wick. A common misconception is that a candle burns by burning the wick. What is actually burning is wax vapour which is drawn up through the wick. When you blow a candle out, wax vapour continues to rise off the candle so you can light this vapour which burns back down to the wick, relighting the candle.
How should we depict an atom? Like a solar system with electrons orbiting the nucleus on hula hoop orbits? That idea is so last century! Bosi takes us into the quantum world, where an electron's position and velocity aren't well defined - all we can calculate are the probabilities e.g. of finding an electron at different points in space. When we do that, we find electrons do not neccessarily occupy circles or spheres in space. Rather their probability densities make all sorts of interesting shapes from the dumbell to the peanut with the donut around it.
Pioneering NASA mathematician Katherine Johnson has died at the age of 101. Johnson was part of a group of African-American women who worked on critical mathematical calculations in the early days of human spaceflight, as chronicled in the best-selling book and hit movie “Hidden Figures.”
"She was an American hero and her pioneering legacy will never be forgotten,” said NASA Administrator Jim Bridenstine.
Launching Americans from U.S. soil, sending a new rover to Mars and continuing to prepare for human missions to the Moon are just a few of the things NASA has planned for 2020.
This video is available for download from NASA's Image and Video Library: https://images.nasa.gov/detail....s-NHQ_2019_1231_2020
Expedition 61 Crew, Record-Setting Astronaut Christina Koch Return to Earth
Expedition 61 Commander Luca Parmitano of ESA (European Space Agency), Soyuz commander Alexander Skvortsov of Roscosmos and NASA Flight Engineer Christina Koch landed safely on Earth near the town of Dzhezkazgan, Kazakhstan, Feb. 6 after bidding farewell to their colleagues on the complex and undocking their Soyuz MS-13 spacecraft from the Poisk Module on the International Space Station. Koch completed a 328-day, 139-million mile mission on the orbital outpost --- the longest spaceflight ever conducted by a woman in history and the second longest single spaceflight by a U.S. astronaut. Parmitano and Skvortsov wrapped up a 201-day mission in space spanning 85.2 million miles.
Lanzar en órbita a astronautas estadounidenses desde EE.UU, enviar un nuevo rover a Marte y continuar preparándose para misiones humanas a la Luna son solo algunos de los planes de la NASA para el año 2020.
Este video se puede descargar libremente desde: https://go.nasa.gov/2TyyAoh
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While Apollo placed the first steps on the Moon, Artemis opens the door for humanity to sustainably work and live on another world for the first time. Using the lunar surface as a proving ground for living on Mars, this next chapter in exploration will forever establish our presence in the stars. ✨
We are returning to the Moon – to stay – and this is how we are going!
Actress Kelly Marie Tran of “Star Wars: The Rise of Skywalker” lent her voice to this project.
Let’s say you’re on an interplanetary mission to Mars, millions of miles from the nearest hospital, and something in your body goes awry. Say, a routine body scan reveals a potentially life-threatening blood clot. What on Earth, or in space I guess, do you do? Well now we have the answer to that question.
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NASA Flight Surgeon Explains How to Treat a Blood Clot in Space | WIRED
What's different about hygiene in space? Former NASA astronaut Mike Massimino breaks down all the differences between using the bathroom, washing your hair, and brushing your teeth on Earth and in space. How do you take showers in space? Do you get a private bathroom on the International Space Station? Can you bring your own toothbrush into space?
Mike Massimino is a former NASA astronaut, senior advisor for space programs at the Intrepid Museum, and professor at Columbia University.
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WIRED is where tomorrow is realized. Through thought-provoking stories and videos, WIRED explores the future of business, innovation, and culture.
Former NASA Astronaut Explains How Hygiene Is Different in Space | WIRED
The High Definition Earth-Viewing (HDEV) experiment on the International Space Station has experienced a loss of data, and ground computers are no longer receiving communications from the payload. A team of engineers are reviewing the available health and status information from HDEV to identify what may have occurred. Additional updates will be published as they become available.
NASA's Parker Solar Probe mission has returned unprecedented data from near the Sun, culminating in new discoveries published on Dec. 4, 2019, in the journal Nature. Among the findings are new understandings of how the Sun's constant outflow of material, the solar wind, behaves. Seen near Earth -- where it can interact with our planet's natural magnetic field and cause space weather effects that interfere with technology -- the solar wind appears to be a relatively uniform flow of plasma. But Parker Solar Probe's observations reveal a complicated, active system not seen from Earth.
Music Credit: Smooth as Glass by The Freeharmonic Orchestra
Read more: https://www.nasa.gov/feature/g....oddard/2019/nasas-pa
Video Credit: NASA's Goddard Space Flight Center
Karen Fox (ADNET): Writer
Sarah Frazier (ADNET): Writer
Genna Duberstein (USRA): Producer
Genna Duberstein (USRA): Editor
Chris Smith (USRA): Narrator
Adriana Manrique Gutierrez (USRA): Animator
Jonathan North (USRA): Animator
Scott Wiessinger (USRA): Animator
Adam Szabo (NASA/GSFC): Scientist
Russ Howard (NRL): Scientist
Dave McComas (SwRI): Scientist
Stuart Bale (University of California, Berkeley): Scientist
Justin Kasper (University of Michigan): Scientist
Nour Raouafi (Johns Hopkins University/APL): Scientist
Eric Christian Ph.D. (NASA/HQ): Scientist
Adam Szabo (NASA/GSFC): Project Support
Please give credit for this item to:
NASA's Goddard Space Flight Center
This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at: http://svs.gsfc.nasa.gov/13282
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What's different about food in space? Former NASA astronaut Mike Massimino breaks down all the differences between eating on Earth and eating in space. Is astronaut ice cream REALLY a thing? Who decides what food is brought to space? Can you eat burgers in space? Why do astronauts use tortillas instead of bread?
Mike Massimino is a former NASA astronaut, senior advisor for space programs at the Intrepid Museum, and professor at Columbia University.
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Get more incredible stories on science and tech with our daily newsletter: https://wrd.cm/DailyYT
Also, check out the free WIRED channel on Roku, Apple TV, Amazon Fire TV, and Android TV. Here you can find your favorite WIRED shows and new episodes of our latest hit series Tradecraft.
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WIRED is where tomorrow is realized. Through thought-provoking stories and videos, WIRED explores the future of business, innovation, and culture.
Former NASA Astronaut Explains How Food Is Different in Space | WIRED
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