scientificnotation

Welcome to our YouTube channel! In this highly informative video, we delve into the captivating world of cells, the fundamental building blocks of life. Designed to be an invaluable resource for Biology and IB students, we explore the concept of cells as the basic unit of life. Join us as we unravel the intricate structures and functions of cells, uncovering their remarkable diversity and importance in living organisms. From prokaryotes to eukaryotes, from plant cells to animal cells, we will guide you through the fascinating realms of cell theory, cell organelles, and cellular processes. Gain a comprehensive understanding of cell structure, explore the intricate networks of cellular communication, and discover how cells play a vital role in maintaining homeostasis. Through engaging visuals and concise explanations, this video equips you with the knowledge and tools necessary to excel in your Biology studies and thrive in your IB curriculum. Join us on this captivating journey into the microscopic world of cells, where the foundations of life are unveiled.

Sleep is central to maintaining your physical and mental health, but many people don't sleep enough. We all do it, but what happens to us when we sleep? Click here to subscribe to The Economist on YouTube: https://econ.st/2xvTKdy Every night almost everyone on the planet enters into a state of unconsciousness and paralysis - but what is really happening inside the body when we drift off, and what's the impact if we don't get enough sleep? Sleep is regulated by your circadian rhythm, or body clock located in the brain. The body clock responds to light hews ramping up production of the hormone melatonin at night, and switching it off when it senses light. There are four stages of sleep that the body experiences in cycles throughout the night. On a good night we cycle through these stages four or five times. Stages one and two are light sleep. This is a transition from being awake to falling asleep. Heart rate and breathing begin to slow, body temperature falls, and muscles may twitch. Stage 3 is sometimes referred to as Delta sleep - because of the slow Delta brainwaves that are released during this stage. This is the first stage of deep sleep where our cells produce the most growth hormone to service bones and muscles, allowing the body to repair itself. Stage 4 is where we begin to dream. The body creates chemicals that render it temporarily paralyzed so that we do not act out our dreams. In this stage, the brain is extremely active and our eyes, although closed, dark back and forth as if we were awake. Humans roughly spend one third of their lives asleep. Modern lifestyles, stress and the proliferation of Technology, mean that people is sleeping far less today than they were a century ago. Sleeping less than seven hours per day is associated with an increased risk of developing chronic conditions which could reduce life expectancy.

Do you know somebody who doesn't believe that climate change is happening? Most scientists say it is. Rob and Sam get some tips on how to make people think about climate, and teach you new vocabulary along the way. ❓❓❓ This week's question: What percent of the world’s scientific community agree that climate change is real? a) 79 percent b) 89 percent c) 99 percent Listen to the programme to find out the answer. Vocabulary: ✔️ climate denier - person who does not believe that climate change is happening, or does not accept that it is caused by human activity such as burning fossil fuels ✔️ ill-informed - knowing less than you should about a particular topic ✔️ full-blown - completely developed or committed ✔️ take a long, hard look (at something) - examine something very carefully in order to improve it for the future ✔️ throw insults - say offensive, hurtful things directly to someone ✔️ backfire - have the opposite effect from the one you intended [Cover: Getty Images] You can download the transcript and audio for this programme here: 👉 https://www.bbc.co.uk/learningenglish... More 6 Minute English episodes: ⭐ The health benefits of apples 👉 • The health benefits of apples ⏲️ 6 Mi... ⭐ Why do we procrastinate? 👉 • Why do we procrastinate? ⏲️ 6 Minute ... ⭐ Doomscrolling: why do we do it? 👉 • Doomscrolling: Why do we do it? ⏲️ 6 ... ⭐ Exercise for The Lazy 👉 • Exercise for the lazy ⏲️ 6 Minute Eng... ⭐ Can AI have a mind of its own? 👉 • Can AI have a mind of its own? ⏲️ 6 M... 🤩🤩🤩 SUBSCRIBE to our YouTube channel for more videos to help you improve your English: / bbclearningenglish Visit our website 👉 https://www.bbclearningenglish.com Follow us on Instagram 👉 https://www.instagram.com/bbclearning... Follow us on Twitter 👉 https://www.twitter.com/bbcle Find us on Facebook 👉 https://www.facebook.com/bbclearninge... Get our app: Android 👉 bit.ly/2PeLcf6 iPhone 👉 apple.co/2wmG2GU We like receiving and reading your comments - please use English when you comment 😊 #learnenglish #climatechange #6minuteenglish

Food. For all of us it is a basic necessity and for those lucky enough, it is something we spend a lot of time planning and enjoying. Click here to subscribe to our channel 👉🏽 https://bbc.in/3VyyriM CrowdScience listeners certainly have a lot of food related questions; in this buffet of an episode Marnie Chesterton opens the fridge door to pick the tastiest. Starting with the seemingly simple question of what makes us feel hungry, and ending in outer-space, Marnie investigates flavour, nutrition and digestion. After a year when watching TV has become a core activity for many people stuck in their homes, one listener wants us to find out if eating food whilst watching the TV affects our perception of taste. We then journey to the skies and ask if it is true that food tastes blander on aeroplanes, what does that mean for astronauts’ mealtimes? Back on Earth, Marnie explores whether humans are the only animals that season their food. Tuck in your napkins and prepare to feast on a smorgasbord of scientific snacks.

When you can't sleep, you're desperate for help. And there's a booming industry waiting to tell you all the ways a lack of sleep can ruin your health -- and to sell you fancy gadgets to help you finally doze off. Shedding light on this flawed doomsday messaging, Dr. Jen Gunter explains why you shouldn't lose sleep over sleep -- and what to do instead. (For more on how your body works, tune in to her podcast, Body Stuff with Dr. Jen Gunter, from the TED Audio Collective.) Think you know how your body works? Think again! In this TED original series, Dr. Jen Gunter will share the truth about what's really going on inside you. For more, tune into her podcast, Body Stuff with Dr. Jen Gunter: https://link.chtbl.com/BodyStuffYT

Scientific research into the relationship between what we eat and how we feel is growing. In this programme, we’ll be investigating the connection between our food and our mood. We’ll hear how healthy eating makes us feel better, and of course, we’ll be learning some new vocabulary as well. ❓❓❓ This week's question: How much of the body’s total energy is used up by the brain? a) 10 percent b) 20 percent c) 30 percent Listen to the programme to find out the answer. Vocabulary: ✔️ emotional eating - eating lots of food in response to emotional feelings instead of to hunger ✔️ appetite - the feeling that you want to eat food; the desire for food ✔️ grab and go - the activity of taking something quickly when you do not have much time ✔️ bananas - (slang) silly; crazy ✔️ roll your eyes - move your eyes upwards as a way of showing annoyance, boredom or disbelief ✔️ patronising - speaking or behaving towards someone as if they were stupid or unimportant [Cover: Getty Images] You can download the transcript and audio for this programme here: 👉 https://www.bbc.co.uk/learningenglish... More 6 Minute English episodes: ⭐ The health benefits of apples 👉 • The health benefits of apples ⏲️ 6 Mi... ⭐ Why do we procrastinate? 👉 • Why do we procrastinate? ⏲️ 6 Minute ... ⭐ Doomscrolling: Why do we do it? 👉 • Doomscrolling: Why do we do it? ⏲️ 6 ... ⭐ Exercise for The Lazy 👉 • Exercise for the lazy ⏲️ 6 Minute Eng... ⭐ Can AI have a mind of its own? 👉 • Can AI have a mind of its own? ⏲️ 6 M... 🤩🤩🤩 SUBSCRIBE to our YouTube channel for more English videos and podcast English to help you improve your English: / bbclearningenglish Visit our website 👉 https://www.bbclearningenglish.com Follow us on Instagram 👉 https://www.instagram.com/bbclearning... Follow us on Twitter 👉 https://www.twitter.com/bbcle Find us on Facebook 👉 https://www.facebook.com/bbclearninge... Join us on TikTok 👉 https://www.tiktok.com/@bbclearningen... Get our app: Android 👉 https://bit.ly/2PeLcf6 iPhone 👉 https://apple.co/2wmG2GU We like receiving and reading your comments - please use English when you comment 😊 #learnenglish #bbclearningenglish #food Featured playlist

The better you sleep at night, the better your brain will function, and the better you’ll feel. Learn about what goes on in the brain while you rest, the negative effects of sleep deprivation, and steps to help ensure a good night’s sleep.

View full lesson: http://ed.ted.com/lessons/what-would-... In the United States, it’s estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn’t just a minor inconvenience: staying awake can cause serious bodily harm. Claudia Aguirre shows what happens to your body and brain when you skip sleep. Lesson by Claudia Aguirre, animation by TED-Ed.

If you are one of the millions of people who always feels tired, you can blame it on your alarm clock, the industrial revolution and a general lack of understanding about the bodily behaviour. Or, maybe it is because you sleep too long. It turns out the human body has an internal clock that is so precise, there are many factors that can cause you to wake up tired. One thing that is known for sure - if you are not hitting every sleep cycle, you are not getting a good night's rest.

Special thanks: Animation by: Fusion Medial Animation (www.fusionanimation.co.uk) Microscopy by: Timelapse Vision (http://timelapsevision.com)

When you get the flu, viruses turn your cells into tiny factories that help spread the disease. In this animation, NPR's Robert Krulwich and medical animator David Bolinsky explain how a flu virus can trick a single cell into making a million more viruses. See and hear the rest of the story on NPR.org: http://www.npr.org/templates/story/st... Credit: Robert Krulwich, David Bolinsky, Jason Orfanon

Explore the three main ways viruses can be driven to extinction, and dig into the possibility of COVID-19 dying out. -- Viruses are wildly successful organisms. There are about 100 million times as many virus particles on Earth as there are stars in the observable universe. Even so, viruses can and do go extinct. So, what is the possibility of the virus that causes COVID-19 going extinct? Explore the three main ways viruses can be driven to extinction. Directed by Anton Bogaty. This video made possible in collaboration with Gates Ventures Learn more about how TED-Ed partnerships work: https://bit.ly/TEDEdPartners

Thank you USGS for making the images available

There can be no better or worse sight than your own reflection, but these vain animals seemed very keen to admire themselves. Innovative French photographer Xavier Hubert-Brierre travelled to Gabon with his wife and set up a mirror in several locations in order to capture animals walking by. To see more of Xaviers content go to - https://www.youtube.com/XHB06400CANNE... The results are stunning, with one of the more amusing reactions being from two leopards. One of them takes several looks at the mirror before it is attacked by a second leopard, who calls off the ambush when he too spots Xavier's mirror. Welcome to Storytrender - the home of extraordinary video. We are dedicated to unearthing amazing UGC video and telling the stories behind them. Our team of journalists scour the web 24/7 to licence the latest trending videos before they go viral. We then package these up into bitesize news clips for the YouTube community. Stay tuned for verified, engaging and extraordinary stories uploaded daily. To use or license this video please contact Licensing@catersnews.com Connect with Storytrender: Follow us on Twitter: www.twitter.com/StoryTrender Like our Facebook: www.facebook.com/StryTrndr Visit our website: www.storytrender.com Company Information: Storytrender is owned and operated by Caters News Agency Ltd, an international multimedia content provider. We supply news, picture, video and feature stories to the world’s largest media publishers. All videos aired on this channel have been licensed from their rightful owners

Get ready for a fascinating glimpse into the world of kittens as they engage in a playful fight for superiority. In this video, you'll see these cute little furballs chasing each other and fighting with their hind legs to show dominance. But things take a serious turn when their mother cat steps in to punish them for their behavior. Watch as the mother cat uses her instincts to punish and educate her kittens on the proper way to behave. You'll see her gently nipping and swatting her kittens as they meow in protest. It's amazing to witness how the mother cat maintains control and keeps her kittens in line while teaching them valuable lessons. In this video, you'll witness the natural behavior of kittens and the important role their mother plays in their development. You'll see the power dynamics at play as the kittens fight for dominance, and the mother cat's ability to restore order and discipline.

We are Stoyan and Dessy from Bulgaria. We are not organization, neither a shelter, we are just an ordinary couple with a big dream. Everything we provide for the stray animals is coming from our own pockets or with the help of donations from our subscribers. We have 4 cats at home, all rescued from the streets - Sopolcho & Bagheera live with us while Alexa & Rijo live with Dessy's mom, who has been feeding and caring of stray animals for the last 10 years. Bulgaria is a small and poor country with lots of stray cats and not enough kind people to take them in. Our dream is to build a shelter where we could take care of many stray cats with the help of Dessy's mom. If you would like to support us, please subscribe to our channel and share our videos with your friends and family. It would mean a lot to us ❤️

Three young cheetah brothers hunt an adult ostrich.

Bald eagle walking on the beach at Anchor Point on the Cook Inlet and Kenai Peninsula in Alaska. The eagle was enjoying a fish snack when a tractor drove by and scared him away. The seagulls immediately swooped in to munch on the eagle's snack, but they flew away as soon as the eagle returned.

I had my very fist up close interaction with an Emperor Penguin! Most of its friends were quietly molting behind a snow berm on behind me about 15 yards. This one seemed too excited about his new feathers to just stand around though.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

In 2019, the world's largest caldera was discovered after being previously unknown to science. This caldera measured 150 kilometers or 93 miles wide, which is far larger than the calderas measured at supervolcanoes such as Yellowstone and Toba. It formed more than 30 million years ago off the coast of what is now the Philippines on a large plateau called the Benham Rise. It is a fascinating feature which this video will cover the origin of. If you would like to support this channel, consider becoming a patron at http://patreon.com/geologyhub. Another way to support this channel is to make an order via our gemstone and geology related etsy store at http://prospectingarizona.etsy.com. This channel's merch store is also on etsy at http://geologyhub.etsy.com. Graphics of eruption dates are courtesy of the Global Volcanism Program, Smithsonian Institute. https://volcano.si.edu/ Thumbnail Photo Credit: NOAA & NSF, Public domain 0:00 Large Calderas 0:42 A 150 km wide caldera 1:03 Location of the Apolaki Caldera 1:30 Flood Basalts 2:24 The Caroline Hotspot 2:46 Formation of the Caldera Google Earth imagery used in this video: ©Google

Intro 0:00 How Did This Happen? 3:04 The Dead Ocean 7:11 Terrestrial Casualties 10:20 Aftermath 12:51 Conclusion 17:41 #historyoftheearth #eon #epoch #geology #paleoanalysis #stemmammal #permian #thegreatdying #extinction If there is one thing that has been proven time and time again as we journey through the history of life, it is that no species lasts forever… Extinction is in fact a natural part of life. As long as the world keeps changing there will be species who succeed in adapting to those changes, and others who fail. That being said, there are also moments in geological history that there is such an overwhelming loss of life that they are seen as one of Earth’s great mass extinctions. This has happened five time throughout our planets history…. But even among these great catastrophes, this one stands out… With an absolutely unprecedented 70% of terrestrial species and 96% of marine species dying out at the end of the Permian, this is the closest our planet has ever come to becoming a dead world. Come join me as we conclude the Paleozoic Era with the worst thing to ever happen to life on Earth… The only event in our planets history worthy of the title “The Great Dying” Thank you to Wondrium for sponsoring today’s video! Check out My Linktree to join me on social media!: https://linktr.ee/PaleoAnalysis Most of my music has been provided by MehoDrums. If you enjoy any of the tunes in my background or into, check out some of his other stuff and contact him if you want to have him compose some stuff for you! https://linktr.ee/MehoDrums?fbclid=Iw... Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.