Seeker
How James Webb Will Give Us Our Best View Of the Universe Yet
updated
Read more: http://bit.ly/3Vdqzli
0:00 Intro
0:27 What is lunar regolith simulant?
0:57 What the Apollo missions taught us about lunar regolith
2:18 The new race to the Moon
2:56 How to make fake Moon dirt
4:18 Experiments with lunar regolith simulant
4:51 Landing a rocket on the Moon
7:00 The potential geopolitics of Moon dust
8:04 Looking to the Moon & beyond
9:05 Outro & Credits
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Camera: Leo Maco
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0:00 Intro
0:29 Battery basics feat. a potato
1:29 Lithium-ion batteries 101
2:18 What is a solid-state battery?
3:28 Intro to Sakuú
4:00 Why 3D-printing?
5:35 3D-printing prototype
6:25 Customized battery shapes
7:34 Challenges of total reinvention
8:09 Looking forward
Correction:
0:40 The positive end (cathode) is the copper penny and the negative end (anode) is the zinc coated nail.
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0:00 - Intro
0:50 - The NASA mission
1:34 - The necessary tech
2:18 - Solar Gravitational lens 101
3:55 - Einstein ring
5:13 - How to create a detailed image of exoplanet
5:57 - Telescope location
7:12 - Telescope size
7:39 - Answering big questions
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Credit: Aretaios Lalakos/Northwestern University
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00:00 Intro
00:40 Why indigo?
01:12 Natural vs. synthetic indigo dye
01:56 Dying demo
03:06 Environmental impact of dyes
04:01 How Huue makes biosynthetic indigo dye from microbes
07:22 Regulation and voluntary efforts
07:45 Jeans can be slow fashion
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00:00 Introduction
00:36 Russia-Ukraine War
01:19 Why uranium?
01:41 How uranium becomes nuclear fuel
04:12 The future of nuclear power
06:34 The debate behind nuclear power
Russia is a huge player on the global stage when it comes to nuclear energy and particularly when it comes to the uranium supply chain.
The US can pretty easily turn its back on Russian oil and gas and has and has not been able to pull the trigger on uranium because we rely on Russia for a significant chunk of our uranium.
It supplies about 16% of the US’s uranium supply and upwards of that when it comes to the global uranium supply.
Nuclear power is a highly contested energy source, but it still makes up about half of our carbon pollution free electricity in the U.S. Right now, the Biden administration is investing a lot of money and resources into its expansion, from extending the life span of old plants to building new ones.
#Uranium #RussiaUkraineWar #NuclearEnergy #NuclearFuel #NuclearPower #Seeker #TheVerge
Read more:
The US Can’t Seem to Quit Russian Uranium
theverge.com/2022/3/31/23003494/war-ukraine-nuclear-energy-uranium-russia-supply-chain
The US’s exclusion of uranium from energy sanctions “was very frustrating because we understand that this is part of the Russian war machine,” says Kostiantyn Krynytskyi, head of the energy department at Ukrainian environmental organization Ekodia.
That uranium ore found at a Grand Canyon museum isn’t as scary as it sounds
theverge.com/2019/2/19/18232027/uranium-ore-grand-canyon-museum-radiation-safety-health-risks
We know that prolonged exposure to one of the decay products of uranium or radon gas in high concentrations increases your chance of getting cancer. But three buckets of ore sitting in a basement or in a closet is a lot different than somebody going down into a mine and working for 30 years mining uranium ore. It’s not just the dose rate, but it’s the total dosage you get is what determines your risk.
Read more: bit.ly/3ouDNvC
00:00 Intro
00:44 What is lab-grown meat?
01:30 Pros and cons of lab-grown meat
02:11 How to grow lab-grown meat
03:58 Challenges of lab-grown meat
04:41 The future of lab-grown meat
05:54 The pig in the backyard
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Learn more here: youtube.com/watch?v=9VXHPvI6kv8&t=3s&ab_channel=Seeker
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00:00 - 00:31 Intro
00:31 - 01:00 About JWST
1:00 - 01:39 Commissioning Phase
1:39 - 02:18 Deepest Image Ever
02:18 - 02:48 Carina Nebula
02:48 - 03:05 Southern Ring
03:05 - 03:20 Stephan’s Quintet
03:20 - 03:54 Exoplanet Spectrum
03:54 - 05:04 Scientist Reactions
05:04 - 05:16 End Credits
NASA showed off the first full-color images captured by the James Webb Space Telescope. And these images are just a glimpse into what JWST can really do. It took two and a half decades to build and launch JWST, the largest and most advanced space telescope ever built. Unlike its predecessor Hubble, Webb can observe way farther into the infrared part of the spectrum, giving it an even better look at the first galaxies formed after the Big Bang. The telescope will help us understand how the cosmos began, and whether we’re alone out there.
First, we have the deepest and sharpest infrared image ever taken of our universe. It’s a region full of thousands of galaxies. And because the light from these distant objects takes so long to reach us, we’re seeing them as they were when the universe was less than a billion years old.
Then there’s the Carina Nebula, a stellar nursery. This image provides a glimpse into how stars form. It was imaged by Hubble…but this new view reveals new stars…and some new mysteries.
On the other end of the stellar life cycle, there’s the Southern Ring. It’s a region of cosmic dust and gas that surrounds a dying star. The telescope captured two views in different chunks of the infrared spectrum, revealing a clearer view of the binary star at the nebula’s center.
Then there’s Stephan’s Quintet, a compact group of five galaxies. Highlights here are two galaxies in the process of merging, and a region of extremely bright gas being pulled into a black hole.
And finally, this is the telescope’s first spectrum of an exoplanet’s atmosphere. This graph reveals the atmospheric composition of a large, hot planet far from our own solar system. Data like this can reveal whether a world may sustain life as we know it....in this case, we can see the tell-tale signs of water vapor.
Read more:
Marvel At The First Batch Of Full-Color Images From NASA’s James Webb Space Telescope
theverge.com/2022/7/12/23203307/jwst-first-full-color-images-nasa-reveal
Today’s images each showcase an exciting ability of the observatory — and they’re only a jumping-off point of what’s to come. It’s got approximately 20 years left in its lifespan to serve up more delicious astronomical treats.
How Engineers Got The World’s Most Powerful Space Telescope Ready to Do Science theverge.com/2022/7/7/23188300/nasa-jwst-space-telescope-mirror-alignment-commissioning-engineers
But, before JWST can start collecting all these baby pictures of the cosmos, NASA and STScI, which oversees the telescope’s operations and science, needed to know that all of JWST’s state-of-the-art instruments and hardware could actually work in tandem to get the job done.
What to Expect From NASA’s James Webb Space Telescope Launch
theverge.com/22826899/james-webb-space-telescope-jwst-launch-mission-what-to-expect
“I really do think that this telescope will be transformational for astrophysics,” says Straughn. “I think that we will learn things about the Universe that completely surprise us, and that’s one of the most exciting prospects about any time we put a big, bold telescope like this into space. We learn things that we never expected.”
Special thanks to HHMI Tangled Bank Studios
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While they may not be our favorite part of eating outside, bees are really important to our ecosystem. They’re prolific natural pollinators and are a huge part of our modern agriculture. A lot of the food we eat relies on pollination from bees! Unfortunately though, they’re also in serious danger. 4,000 species across the U.S are in decline. And there isn’t one specific reason as to why this is happening.
The scientists in our next film, SymBeeOsis, might have discovered one cause. And it could change everything we know about bees and their ecosystem, starting with a microscopic world that we never knew existed, until now.
This is SymBeeOsis, from Day’s Edge Productions.
#Bees #Herbivores #FoodSupply #Ecosystem #Pollination #Agriculture #Seeker
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Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
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The Caribbean coastline of the Yucatán Peninsula is famous for its beautiful beaches, clear blue water, and diversity of wildlife. But under the surface of the water lies a different story.
As the world continues to churn out millions of tonnes of plastic each year, more and more of it ends up in the ocean and on our shores. If we don’t reduce our plastic use, experts say that by 2050 there will be more plastic in the ocean than there are fish.
This film follows diver Tamara Adame as she battles the growing plastic waste that plagues Yucatán’s fragile reefs, marine life, and even her own livelihood.
This is Mermaids Against Plastic: Tamara, a Free Roaming Studios production.
#Plastic #PlasticPollution #Mexico #YucatanPeninsula #Ocean #MarineLife #Seeker
____________________
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
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Fluids are a necessary part of day to day life. After all, without water you couldn’t live, and without chocolate syrup, well, what would be the point? But have you ever noticed that not all liquids behave the same? In fact, some of them do some totally bewildering stuff under the right circumstances, and even after decades of research scientists are no closer to understanding why.
One question about strange fluids may have finally been answered thanks to some glass beads and laser beams. All liquids that we encounter in the real world can be boiled down to one of two kinds. They’re either Newtonian, or non-Newtonian.
Newtonian fluids are pretty easy to grasp. Well, not literally in some cases—a Newtonian fluid like water would squirt right out of your hand. A Newtonian fluid obeys Newton's Law of Viscosity which means its viscosity is constant. It doesn’t change when a force is applied to it.
Non-Newtonian fluids, on the other, less sticky hand, do change their viscosity…which can lead to some pretty zany shenanigans.
Still there are many more weird non-Newtonian behaviors scientists don’t have answers for. They may have just solved one riddle that’s stood for over 50 years.
#Liquid #Chemistry #LawsOfMotion #Gravity #IsaacNewton #Seeker
Read More:
An Injection of Chaos Solves Decades-Old Fluid Mystery
quantamagazine.org/an-injection-of-chaos-solves-decades-old-fluid-mystery-20220104
One such long-standing puzzle, first articulated nearly 55 years ago, arises when certain liquids stream through cracks and holes in a porous landscape such as spongy soil.
Your Next Surgeon Could Be a Slime Robot
cnet.com/science/your-next-surgeon-could-be-a-magnetic-slime-robot
Created by a team of researchers at the Chinese University of Hong Kong, the Slime Robot is a non-Newtonian fluid, meaning it can behave both as a solid and a liquid. This slime is made from a mixture of PVA and borax, but you can also make your own non-Newtonian fluid at home using cornstarch and water.
SCIENTISTS FINALLY KNOW WHY OREO FILLING ALWAYS STICKS TO ONE SIDE
inverse.com/science/oreology-milks-favorite-scientific-field
Owens was measuring the solution’s viscosity, or thickness. She loaded the solution between two parallel plates in her rheometer and rotated them. Rotating and shearing, or separating, the solution between two plates allows Owens to measure its resistance to separating, which is its viscosity.
____________________
Elements is more than just a science show. It’s your science-loving best friend, tasked with keeping you updated and interested in the compelling, innovative, and groundbreaking science that's happening all around us. Join our passionate hosts as they help break down and present fascinating science, from quarks to quantum theory and beyond.
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
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The Great Green Wall is an epic project that aims to grow an 8,000 kilometer belt of vegetation across the entire width of the African continent. If completed, it would be three times larger than the Great Barrier Reef, and be the largest living “structure” on the planet. But can this massive geo-engineering project transform the landscape into the fertile, tropical place it once was?
So here’s the thing: this part of Africa is heating up. Particularly in the Sahel, which sits between the southern edge of the world’s largest hot desert, the Sahara, and humid savannas to the south. Vegetation is scarce in this semi-arid belt of land, and the U.N. has identified it as a hotspot for climate change.
Temperatures in the Sahel region are increasing 1.5 times faster than the rest of the world, and the Sahara desert is now 10% larger than it was in 1920. Periodic drought, deforestation, and unsustainable agricultural practices have reduced the productivity of the Sahel, causing desertification. This has led to massive food insecurity and displacement of people in the region.
And with temperatures expected to be 3-5°C warmer by 2050, these problems are projected to get worse.
But not all is lost! Remember when we said the Sahara used to be green? Well, that was about 11,500 years ago. Back then there was grass, lakes, and animals like hippos and antelopes! Dubbed the African Humid Period, also known as the “Green Sahara,” this era was the result of intense West African monsoons, which were stronger and brought more summer rainfall than today.
#SaharaDesert #Sahara #Africa #Algeria #ClimateChange #Environment #Desertification #Seeker
Read More:
Africa’s ‘Great Green Wall’ shifts focus to hold off desert
politico.com/news/2021/11/13/africa-great-green-wall-521292
The project called the Great Green Wall began in 2007 with a vision for the trees to extend like a belt across the vast Sahel region, from Senegal in the west to Djibouti in the east, by 2030. But as temperatures rose and rainfall diminished, millions of the planted trees died.
Could the Sahara ever be green again?
livescience.com/will-sahara-desert-turn-green.html
Sometime between 11,000 and 5,000 years ago, after the last ice age ended, the Sahara Desert transformed. Green vegetation grew atop the sandy dunes and increased rainfall turned arid caverns into lakes. About 3.5 million square miles (9 million square kilometers) of Northern Africa turned green, drawing in animals such as hippos, antelopes, elephants and aurochs (wild ancestors of domesticated cattle), who feasted on its thriving grasses and shrubs.
Africa’s ‘Great Green Wall’ could have far-reaching climate effects
sciencenews.org/article/africa-great-green-wall-trees-sahel-climate-change
To investigate those possible impacts, Pausata created high-resolution computer simulations of future global warming, both with and without a simulated wall of plants along the Sahel. Against the backdrop of global warming, the Great Green Wall would decrease average summertime temperatures in most of the Sahel by as much as 1.5 degrees Celsius.
____________________
Elements is more than just a science show. It’s your science-loving best friend, tasked with keeping you updated and interested in the compelling, innovative, and groundbreaking science that's happening all around us. Join our passionate hosts as they help break down and present fascinating science, from quarks to quantum theory and beyond.
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel
Seeker on Twitter http://twitter.com/seeker
Seeker on Facebook facebook.com/SeekerMedia
Seeker http://www.seeker.com
Special thanks to Jackson Wild
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British Columbia is well-known for its stunning natural beauty, especially their lush forests of old growth trees. But did you know that over the last few years, much of the landscape has undergone “clear-cutting”? This is where forests are logged and left with large swaths of empty land. This is a huge problem for the future climate.
Residents in cities, like Grand Forks, B.C., are facing the consequences of clear-cutting head on. Join us in this next film to see how this community is at risk of flooding and much more.
From Ramshackle Pictures, this is Waterlogged
#ClearCutting #Logging #Forest #Forestry #Environment #NaturalDisasters #Seeker
____________________
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
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Seeker on Twitter http://twitter.com/seeker
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Special thanks to Jackson Wild
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In Indonesia, the ocean plays a critical role in people’s livelihood; from their food to their careers. But that important life source is under threat from overwhelming amounts of plastic.
Unfortunately, this pollution is fueled from one of Indonesia’s most popular tourist destinations, Bali. This, combined with plastic from the rest of the world, washes up on beaches, gets hooked by local fishermen, and damages marine ecosystems.
This film follows Wayan, a 90-year-old Balinese fisherman using all his resources and knowledge to tackle this growing problem, one net of trash at a time.
This is Voice Above Water, a production from Turning Tides Films.
#PlasticPollution #Oceans #PlasticWaste #Plastic #Pollution #Environment #Seeker
____________________
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
Subscribe now! youtube.com/user/dnewschannel?sub_confirmation=1
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