TED Talks
TED: How green hydrogen could end the fossil fuel era | Vaitea Cowan
As climate change accelerates, finding clean alternatives to fossil fuels is more urgent than ever. Social entrepreneur Vaitea Cowan believes green hydrogen is the answer. Watch as she shares her team's work mass producing electrolyzers...
SciShow
Antimatter Light Spectrum Discovered!
Scientists were able to measure the emission lines of antimatter! And we may have some new clues about how dinosaurs lost their teeth on the way to becoming birds.
MinutePhysics
Legitimate Cold Fusion Exists | Muon-Catalyzed Fusion
This video is about the original cold fusion: μ muon-catalyzed cold fusion of deuterium, tritium, hydrogen, into helium-3 and helium 4. The problems with it are the half-life of muons and the sticking of muons to alpha particles. Also...
Be Smart
Theory vs Hypothesis vs Law
Some people try to attack things like evolution by natural selection and man-made climate change by saying "Oh, that's just a THEORY!" Yes, they are both theories. Stop saying it like it's a bad thing! It's time we learn the difference...
SciShow
Extreme Engineering to Create the World's Stillest Rooms
There are labs so silent that most people can't stand being inside them, but that stillness lets us run some of our most sensitive experiments.
SciShow Kids
Recycling Old Crayons! An Earth Day Activity
Jessi teaches Squeaks all about recycling, and together, they recycle his old crayons to make cool new ones! Second Grade Next Generation Science Standards Disciplinary Core Idea: PS1.B: Chemical Reactions - Heating or cooling a...
TED Talks
TED: A 3-part plan to take on extreme heat waves | Eleni Myrivili
The deadliest severe weather phenomenon is something you might not realize: extreme heat. Eleni Myrivili, chief heat officer of the city of Athens, Greece, explains that extreme heat and heat waves are often overlooked because they're...
SciShow
Why Don't We Have Cancer-Sniffing Dogs?
There are a lot of stories out there about dogs who seemed to smell lung cancer on their owner’s breath, and a recent study found that some dogs can detect lung cancer in blood samples with astonishing accuracy. So why aren’t there...
3Blue1Brown
Nonsquare matrices as transformations between dimensions | Essence of linear algebra, chapter 8
How do you think about a non-square matrix as a transformation?
TED Talks
TED: Is the pandemic actually over? It's complicated | Anthony Fauci
Be spreaders of facts and truths, says scientist and immunologist Dr. Anthony Fauci. Having advised seven US presidents on various disease outbreaks including COVID-19, he shares insights on the present and future of pandemics, backed up...
3Blue1Brown
Eigenvectors and eigenvalues | Essence of linear algebra, chapter 10
Eigenvalues and eigenvectors are one of the most important ideas in linear algebra, but what on earth are they?
TED Talks
Markus Mutz: How supply chain transparency can help the planet
Given the option, few would choose to buy products that harm the earth -- yet it's nearly impossible to know how most consumer goods are made or where they're sourced from. That's about to change, says supply chain innovator Markus Mutz....
SciShow
Using Devil's Milk to Kill Superbugs
Scientists are turning to unusual places to find new compounds to fight off drug-resistant “superbugs.” The discovery came from milking ferocious mammals!
SciShow
Tapputi-Belatekallim: The First Chemical Engineer | Great Minds
A perfumer from Ancient Babylon named Tapputi-Belatekallim is possibly history's first recorded chemist, and some of the techniques she used are still in practice today.
SciShow
What Does Polar Bear Milk Taste Like?
It's a question that entails some risks: What does polar bear milk taste like, and why does it taste that way?
Crash Course
Theory & Deviance: Crash Course Sociology
Last week we introduced deviance as a concept, but today we’re going return to our major paradigms in sociology and how each approaches deviance. We’ll explore how structural functionalism sees deviance fulfilling a function in society;...
Crash Course
Fate, Family, and Oedipus Rex: Crash Course Literature 202
In which John Green teaches you about one of the least family-friendly family dramas in the history of family dramas, Oedipus Rex. Sophocles' most famous play sees it's main character, who seems like he's got it all together, find out...
TED Talks
TED: Why play is essential for business | Martin Reeves
To thrive in today's competitive economy, you need to constantly reimagine your business. So what's the secret to sustained success? Strategist Martin Reeves makes a pitch for embracing play to spark innovative business ideas -- and...
SciShow
Is Urine Really Sterile?
Despite what you might've seen on some wilderness-survival show, there's increasing evidence that your pee isn't sterile. So don't do anything crazy with it. Sci Show explains!
SciShow Kids
Fireflies: Nature’s Baffling Blinkers Animal | Science for Kids
Have you ever wondered how fireflies twinkle and blink on lovely summer nights? Join Jessi and Squeaks at the fort to learn their secret!
Crash Course
Let's Make an AI that Destroys Video Games
Today we create a game and then build an AI to destroy it. Our game is called TrashBlaster, and it’s like Asteroids but with trash in the ocean, and instead of a spaceship John Green Bot is wielding a laser. We'll use machine learning...
TED Talks
Clay Shirky: How social media can make history
While news from Iran streams to the world, Clay Shirky shows how Facebook, Twitter and TXTs help citizens in repressive regimes to report on real news, bypassing censors (however briefly). The end of top-down control of news is changing...