Crash Course
Who Started World War I: Crash Course World History 210
In which John Green teaches you WHY World War I started. Or tries to anyway. With this kind of thing, it's kind of hard to assign blame to any one of the nations involved. Did the fault lie with Austria-Hungary? Germany? Russia? Julius...
SciShow
Scientists Let Bees Land in their Eyes
When it comes to a beverage menu, I don't usually want to see "tears" on the list. But these three animals do, including bees whose favorite drink is human tears!
SciShow
Fukushima Is Releasing Its Nuclear Wastewater
More than a decade after the Fukushima Daiichi nuclear power plant disaster, its operators are dumping once-contaminated water into the Pacific Ocean. Is that OK?
SciShow
A Big Bang Beginner’s Guide | Compilation
While there's still a lot that astrophysicists don't know about the Big Bang, there are some things we do know. So today, let's get caught up on the Big Bang basics.
TED Talks
TED: This country runs on 98 percent renewable energy | Ramón Méndez Galain
Fifteen years ago, Uruguay was experiencing an energy crisis brought on by its reliance on fossil fuels; today, the nation produces 98 percent of its electricity from renewable sources (and even exports extra energy to neighboring...
TED Talks
TED: Lasting conservation, led by Indigenous heritage | Adjany Costa
Conservation champion and TED Fellow Adjany Costa is on a mission to empower Indigenous communities. Instead of imposing pre-designed policy and plans on local people, she says, conservation efforts should center those who know the land...
Curated Video
USA: NASA GAMMA RAYS DISCOVERY
English/Nat
NASA scientists have discovered a new class of gamma ray sources in the Milky Way galaxy.
Gamma rays, although invisible to the human eye, are the most powerful form of light - more than a hundred million times more powerful...
Curated Video
Us Weekly Entertainment Director on why we're so fascinated with the Jolie Pitt split
SHOTLIST:RESTRICTION SUMMARY:FILM CLIPS ARE CLEARED FOR MEDIA BROADCAST AND/OR INTERNET USE IN CONJUNCTION WITH THIS STORY ONLY. NO RE-SALE. NO ARCHIVE. AP EntertainmentLos Angeles, 21 Jan. 20121. Various of Brad Pitt and Angelina Jolie...
Curated Video
Mansa Musa and Islam in Africa: Crash Course World History
In which John Green teaches you about Sub-Saharan Africa! So, what exactly was going on there? It turns out, it was a lot of trade, converting to Islam, visits from Ibn Battuta, trade, beautiful women, trade, some impressive...
TED Talks
TED: A more accurate way to calculate emissions | Charlotte Degot
Greenhouse gases are colorless, scentless and invisible, making them exceptionally hard to measure. Fortunately, some tools and techniques can help -- one of the most powerful being artificial intelligence, says green technologist...
TED Talks
How carbon capture networks could help curb climate change | Bas Sudmeijer
What if we could build a global waste disposal service for carbon? In this forward-thinking talk, carbon capture advisor Bas Sudmeijer proposes building CO2 networks: partnerships between cities around the world that would share the cost...
TED-Ed
How much electricity does it take to power the world? | TED-Ed
All around the world, millions of people are flipping a switch, plugging in, and pressing an 'on' button every second. So how much electricity does humanity use? And how much will we need in the future? Discover how much energy it takes...
SciShow
The World's Bird Poop Obsession
Here's something to think about the next time you clean your windshield.
SciShow
How We Feel Pain, From Peppers to Pressure
We didn't understand how our bodies processed pain until recently. From hot peppers to slamming your hand in a drawer, recent research suggests that pain from various sources can be processed in a surprisingly similar way.
TED Talks
TED: How free is our freedom of the press? | Trevor Timm
In the uS, the press has a right to publish secret information the public needs to know, protected by the First Amendment. Government surveillance has made it increasingly more dangerous for whistleblowers, the source of virtually every...
TED-Ed
TED-ED: Is there a reproducibility crisis in science? - Matt Anticole
Published scientific studies can motivate research, inspire products, and inform policy. However, recent studies that examined dozens of published pharmaceutical papers managed to replicate the results of less than 25% of them - and...
SciShow
Who Melted the Earth
Hank clarifies, corrects, and generally straightens out the origins of the terrific heat inside the Earth. It's not only from the collisions and pressure that date back to Earth's formation, it also involves the transport of heavier...
TED-Ed
TED-ED: A guide to the energy of the Earth - Joshua M. Sneideman
Energy is neither created nor destroyed - and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Joshua M. Sneideman examines the many ways in which energy cycles through our...
TED Talks
Scott Fraser: Why eyewitnesses get it wrong
Scott Fraser studies how humans remember crimes -- and bear witness to them. In this powerful talk, which focuses on a deadly shooting at sunset, he suggests that even close-up eyewitnesses to a crime can create "memories" they could not...
Curated Video
Who Started World War I: Crash Course World History 210
In which John Green teaches you WHY World War I started. Or tries to anyway. With this kind of thing, it's kind of hard to assign blame to any one of the nations involved. Did the fault lie with Austria-Hungary? Germany? Russia? Julius...
SciShow
The Gamma Ray Burst of 775
About 1200 years ago, Earth may have experienced one of the rarest and most powerful cosmic events a planet can be exposed to: a gamma-ray burst. If it did, well, let's just say that we, as living things on Earth, are lucky it wasn't worse.
Crash Course
Click Restraint: Crash Course Navigating Digital Information #9
The architecture of the social internet itself tells us not to be patient - to load more tweets, to hit refresh for new posts, and to click the top search results. But just because information is new, or algorithmically determined to be...
TED Talks
María Neira: This is your brain on air pollution
Air pollution knows no borders -- even in your own body, says public health expert María Neira. In this startling talk, she describes how the microscopic particles and chemicals you breathe affect all your major organs (including your...
Crash Course
Using Wikipedia: Crash Course Navigating Digital Information #5
Let's talk about Wikipedia. Wikipedia is often maligned by teachers and twitter trolls alike as an unreliable source. And yes, it does sometimes have major errors and omissions, but Wikipedia is also the Internet's largest general...