Smile and Learn helps your kids to learn new vocabulary. This time, they'll learn about fruits. Always with an easy example for kids to identify each word with the correct fruit.

This video belongs to a collection of videos where kids will learn new words about several topics always in a fun and easy way with helpful examples that will boost them forward.

Thanks for visiting us! If you want your children to smile and learn, subscribe! :D

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https://www.patreon.com/homeschoolpop We share some interesting Valentine's Day Facts for kids in this Homeschool Pop video! How many valentines are sent out every year? How many boxes of chocolates are given on Valentine's Day? What is the story behind this interesting holiday? Learn these facts and more in this video!

00:00 Introduction
0:13 How many valentines are sent in a year?
0:52 Where is Valentine's Day celebrated?
0:14 Valentine's candy
1:44 The origins of Valentine's Day


❤️ Homeschool Pop? Join our team and get tattoos here: http://homeschoolpop.com

Thanks for learning with us today! We hope to see you next video!

Homeschool Pop Team

Ever feel like there's an international team of bad guys changing all of the easily remembered chemical names and turning them into test-failing, number-infused, pain-in-the-neck names? Well... you're not wrong. IUPAC exists, but try to keep in mind that they're doing it for the greater good. In this episode, Hank talks about IUPAC, prefixes, suffixes, ranking, numbers for carbon chains, and cis or trans double bonds.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: https://apple.co/3d4eyZo
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Common Functional Groups: http://en.wikipedia.org/wiki/F....unctional_group#Tabl
--
Table of Contents

IUPAC 0:00
Every Organic Compound Has Only One Name 1:02
Prefixes 2:16
Suffixes 2:47
Ranking Functional Groups 4:18
Lowest Possible Numbers for Carbon Chains 1:54
Cis or Trans for Double Bonds 6:35
--

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The mystery of Africa splitting in two has puzzled scientists for decades. Now researchers finally believe they’ve found the hidden force behind it. Roads, homes, even entire landscapes are being reshaped, and one day this rift could create a whole new ocean. But this isn’t the only strange discovery shaking our world. In this video, you’ll also see the most mysterious volcanoes, lost cities hidden for centuries, unbelievable archaeological finds, and secrets buried deep under the ground. From ancient artifacts scientists still can’t explain, to vanished civilizations and jaw-dropping natural phenomena, these are the stories that rewrite what we thought we knew about our planet and its history.
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Did you know that at a certain point on a moving wheel... there's no motion? I mean, kinda... it's all relative, right? Prepare to have your mind blown in this episode of Crash Course Physics where Shini delves into the world of rotational motion!

--

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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Neil deGrasse Tyson features his interview with Jane Goodall and discusses chimpanzee behavior with Chuck Nice and Jill Pruetz.

Jane Goodall 1934 - 2025

Startalk | S3, E3

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#NationalGeographic #Startalk #JaneGoodall

About National Geographic:
National Geographic is the world's premium destination for critically acclaimed storytelling around science and exploration. Discover amazing wildlife, ancient civilizations, hidden worlds, and the incredible wonders of our Earth. Through world-class scientists, photographers, journalists, and filmmakers, Nat Geo inspires fans of all ages to connect with, explore, and care about the world.

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Jane Goodall: Discussing Chimpanzee Behavior (Full Episode) | Startalk | National Geographic
https://youtu.be/Ztjcf7iR5DE

National Geographic
youtube.com/natgeo

Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to & different from animal cells.

Watching this after 2023? Here's an updated video about plant cells from Crash Course Botany: https://youtu.be/y9BLCfcUcFg

Table of Contents annotations:
1. Introduction 0:00
2. Plant Evolution 0:56
3. Eukaryotic vs. Prokaryotic Cells 2:33
4. Cellulose and Lignin 3:58
5. Plastids and Chloroplasts 7:05
6. Central Vacuole 8:10

This video uses sounds from Freesound.org

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High-energy rechargeable batteries seemed impossible, until we made them. Sponsored by CodeRabbit. Cut code review time and bugs in half. Try CodeRabbit at https://coderabbit.link/veritasium

If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV

▀▀▀
0:00 What’s inside a battery?
4:11 How does a battery work?
7:15 How did we increase battery power?
11:13 The first rechargeable lithium battery
13:29 The Tiny Needles That Kill Batteries
16:06 Goodenough? We can do better
20:07 The birth of the lithium-ion battery
27:10 Why do batteries explode?
29:31 Blowing up a battery

▀▀▀
A massive thank you to Dr Billy Wu, Dr Sam Cooper, Dr Derek Sui, Professor Magda Titirici, Dr Jingyu Feng, Dr Monica Marinescu, Li Ren Thow, Genlin Liu and Sam Riley; and to Professor Guillermo Rein, Dr Harry Mitchell, Hanna Berry, and Dr Nick Kalogeropoulos at Imperial College London for their invaluable contributions to this video. And a big thank you to Conrad Duncan for all his help in pulling everything together.

We’re incredibly grateful to Kurt Kelty and the team at General Motors for their time and expertise.

Thanks also go to Dr Yuzhang Li and Prof Jay Morton Turner for all their help on the project.

▀▀▀
References: https://ve42.co/RefsBatteries

Image References: https://ve42.co/ImgRefsBatt

▀▀▀
Special thanks to our Patreon supporters:

Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, Anton Ragin, armedtoe, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Dave Kircher, David Johnston, David Tseng, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Ibby Hadeed, JT, Jeromy Johnson, Jon Jamison, Juan Benet, Keith England, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Matthias Wrobel, Meekay, meg noah, Michael Bush, Michael Krugman, Orlando Bassotto, Paul Peijzel, Richard Sundvall, Robert Oliveira, Sam Lutfi, Tj Steyn, Ubiquity Ventures, Walter Flinn, wolfee

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Writers: Emilia Gyles, Casper Mebius, Gregor Čavlović & Derek Muller
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Assistant Editor: James Stuart
Researchers: HyoJeong Choi, Aakash Singh Bagga & Gabe Strong
Thumbnail Designers: Ren Hurley, Ben Powell & Abdallah Rabah
Production Team: Rob Beasley Spence & Josh Pitt
Executive Producers: Derek Muller & Casper Mebius
Additional video/photos supplied by Getty Images, Pond5
Music from Epidemic Sound

We learn a lot about our surroundings thanks to sound. But... what is it exactly? Sound, that is. What is sound? And how does it travel? And what is this doppler effect that we've heard so much about? In this episode of Crash Course Physics, Shini goes over some of the basics (and some of the not-so-basics) of the Physics of Sound.

--

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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New research shows chameleons actively tune nano-crystals to change their color.
For a 10-day free trial, check out http://lynda.com/veritasium
Chameleon research in Nature Communications: http://bit.ly/1FacHO2
"Photonic Crystals Cause Active Colour Change in Chameleons"

This research was carried out by Jérémie Teyssier, Suzanne V. Saenko, Dirk van der Marel & Michel C. Milinkovitch at the University of Geneva Department of Quantum Matter Physics and the Laboratory of Artificial and Natural Evolution (LANE)

Original videos of chameleons are here:
https://www.youtube.com/watch?v=YIRiCwHlUd8
https://www.youtube.com/watch?v=XdQvtP8EKrM
https://www.youtube.com/watch?v=YSH7EmXFMac
https://www.youtube.com/watch?v=egwueh6wj1E

Additional details available at: http://www.lanevol.org/LANE/ch....ameleon_colour_chang
For correspondence: Michel C. Milinkovitch, Laboratory of Artificial & Natural Evolution (LANE), Dept. of Genetics & Evolution, University of Geneva, Switzerland.

The melanin spreading out video is courtesy of Richard Wheeler:
https://www.youtube.com/watch?v=hL0USeWjTHQ
http://www.richardwheeler.net

Special thanks to:
Harry, Jo, Daniella and Raquel for helping me produce and film this video - it looks great thanks to you!

Have your voice heard at the UN Climate Summit in NYC, September 23: http://bit.ly/WhyNotVe



Interview filming by Chris Cassella: http://bit.ly/ScienceAlertVe

Explanations for http://youtu.be/1Xp_imnO6WE
Follow me on twitter: http://bit.ly/VeTwitter
or Instagram: http://bit.ly/VeInsta
or Facebook: http://bit.ly/FBVeritasium
For more on deflecting polar streams with electric fields, see:
http://pubs.acs.org/doi/abs/10.1021/ed077p1520


I'm in Hobart for a live show on Friday at UTAS followed by gigs in Sydney and Canberra next weekend.

Why do we sleep? Well... that's a tricky question. More easily answered is the question, "How do we sleep?" In this episode of Crash Course Psychology, Hank discusses some of the ways our brain functions when sleeping and how it can malfunction as well.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!

--
Chapters:
Introduction: What Happens When We're Sleeping? 00:00
What is sleep and why do we do it? 1:20
How do we sleep? 1:56
Rapid Eye Movement (REM) 2:38
4 Stages of Sleep 3:08
Sleep Deprivation 4:28
Sleep Disorders 4:47
What do we dream about? 6:08
Why do we dream? 7:26
Review & Credits 9:46
--

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In English, we have 5 (well, sometimes 6) vowel letters, but way more vowel sounds. That’s where the IPA can help us! In this episode of Crash Course Linguistics, we’ll learn about vowels, those sounds you can sing with your mouth open, and how we can represent them clearly using the IPA.

Want even more linguistics? Check out the Lingthusiasm podcast, hosted by the writers of Crash Course Linguistics: https://lingthusiasm.com/

***
Watch our videos and review your learning with the Crash Course App!
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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Vincent LaBarca, Bjartur Thorlacius, Scott Harrison, Alexander Thomson, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Yasenia Cruz, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Andrei Krishkevich, Sam Ferguson, Jirat, Brian Thomas Gossett, SR Foxley, Ian Dundore, Jason A Saslow, Jessica Wode, Caleb Weeks, Mark, Patty Laqua, Stephen Saar, John Lee, Eric Prestemon
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In this episode of Crash Course Psychology, Hank talks about these things called "Emotions". What are they? And why do we need them?

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!

--
Chapters:
Introduction: Emotions 00:00
Theories on Emotions 2:11
Cognition & Emotion 3:35
The Spillover Effect 4:22
Top-Down vs Bottom-Up Approaches to Cognitive Processing 6:09
The Autonomic Nervous System 8:10
Optimal Arousal 8:39
Review & Credits 10:03
--
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All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they carry energy with them, and that transfer of energy is what makes all life on Earth possible.

Watch this video in Spanish on our Crash Course en Español channel! https://youtu.be/B-2h7u665AM

Thank you to the following chemistry teachers for their assistance:
James Sarbinoff
Rachel Wentz
Edi González
Lucas Moore
Chris Conley
Addie Clark
Julia Rosinski

Special Thanks to Matt Young at the University of Montana (Geosciences Department, Environmental Biogeochemistry Lab) who helped with the chemical demonstrations.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/2SrDulJ

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In which Jacob and Adriene teach you about the evils of fiscal policy and stimulus. Well, maybe the policies aren't evil, but there is an evil lair involved. In this episode we learn how government use taxes and spending influence the economy. Sometimes the government gives, and sometimes it takes. And the giving and the taking can have a profound effect on how economies behave.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh

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Today, we're going to take a closer look at how the oceans circulate by following the life of a discarded water bottle as it gets snagged in the North Pacific Garbage Patch. We'll talk about what causes the movement of water, called current, both near the surface and much deeper in the oceans, and we'll show how they follow similar (but not identical) paths to the winds. Ocean circulation plays a huge role in cycling vital nutrients within the seas and helps us transport goods on ships across the globe and it's up to us to protect it.

Watch our videos and review your learning with the Crash Course App!
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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Aziz, Christine Phelan, Nick, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Laura Damon, Andrei Krishkevich, Eric Prestemon, Jirat, Brian Thomas Gossett, Ian Dundore, Jason A Saslow, Justin, Jessica Wode, Mark, Caleb Weeks
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#CrashCourse #Geography #Oceans

The Protestant Reformation didn't exactly begin with Martin Luther, and it didn't end with him either. Reformers and monarchs changed the ways that religious and state power were organized throughout the 16th and early 17th centuries. Jean Calvin in France and Switzerland, the Tudors in England, and the Hugenots in France also made major contributions to the Reformation.

Sources
Hunt, Lynn. Making of the West: Peoples and Cultures. Boston: Bedford St. Martins, 2019. Ch. 14.
Kelley, Donald R. The Beginning of Ideology: Consciousness and Society in the French Reformation. New York: Cambridge University Press, 1981.
Lindberg, Carter. The European Reformations. 2nd ed. New York: Wiley Blackwell, 2010.


Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Eric Prestemon, Sam Buck, Mark Brouwer, Jonathan Zbikowski, Siobhan Sabino, Zach Van Stanley, Bob Doye, Jennifer Killen, Naman Goel, Nathan Catchings, Brandon Westmoreland, dorsey, Indika Siriwardena, Kenneth F Penttinen, Trevin Beattie, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
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#history #crashcourse #europeanhistory