PBS
The Real Star Wars
Anti-Satellite weaponry, giant X-ray lasers and kinetic impact missiles nicknamed the "Rods from God." Find out about the history of the real star wars that have been waged over the past 50 years.
Crash Course
War and Civilization: Crash Course World History 205
In which John Green investigates war, and what exactly it may or may not be good for. Was war a result of human beings organizing into larger and more complex agricultural social orders, or did war maybe create agriculture and...
SciShow
This Problem Could Break Cryptography
What if, no matter how strong your password was, a hacker could crack it just as easily as you can type it? In fact, what if all sorts of puzzles we thought were hard turned out to be easy? Mathematicians call this problem P vs. NP, it...
TED-Ed
TED-Ed: Can you solve the Ragnarok riddle? | Dan Finkel
Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jörmungandr emerged. It swallowed Valhalla and contorted itself across the land. Odin has...
TED Talks
TED: A transparent, easy way for smallholder farmers to save | Anushka Ratnayake
A safe space to save money is life-changing -- especially for the 60 million smallholder farmers in West Africa (the majority being women) who often live on less than two dollars a day. Poverty fighter Anushka Ratnayake introduces her...
SciShow
Why Don't We Have Nuclear Fusion Power Yet?
Fusion power is supposed to save us from fossil fuels, so when is nuclear fusion going to be a viable option and why has it been so elusive?
TED-Ed
TED-ED: The life, legacy & assassination of an African revolutionary - Lisa Janae Bacon
In 1972, Thomas Sankara was swept into the revolution seeking to wrest control of Madagascar from France’s lingering colonial rule. The protests inspired the West African native to read works by socialist leaders and seek wisdom from...
TED Talks
Raul Midon: "Tembererana"
Singer/guitarist Raúl Midón performs "All the Answers" in a world premiere at TED2007, followed by the sprightly "Tembererana."
TED Talks
Raul Midon: "Peace on Earth"
Guitarist and singer Raul Midon plays "Everybody" and "Peace on Earth" during his 2007 set at TED.
TED Talks
Morley: "Women of Hope"
Inspired by Aung San Suu Kyi's call to action, "If you're feeling helpless, help someone," Morley composed this song. She sings it at TEDxWomen in her gorgeous, warm voice.
TED Talks
TED: How will we survive when the population hits 10 billion? | Charles C. Mann
By 2050, an estimated 10 billion people will live on earth. How are we going to provide everybody with basic needs while also avoiding the worst impacts of climate change? In a talk packed with wit and wisdom, science journalist Charles...
TED Talks
TED: How we can end sexual harassment at work | Gretchen Carlson
When Gretchen Carlson spoke out about her experience of workplace sexual harassment, it inspired women everywhere to take their power back and tell the world what happened to them. In a remarkable, fierce talk, she tells her story -- and...
Be Smart
CRISPR and the Future of Human Evolution
In part 4 of our special series on human ancestry and evolution, we look into the future. Now that genetic engineering tools like CRISPR allow us to edit our genes, how will that impact human evolution going forward? Are designer babies...
TED Talks
TED: Why a free and fair internet is more vital than ever | Priscilla Chomba-Kinywa
Without the internet, how would you have coped with the pandemic -- from work and school, to maintaining your closest relationships? In the digital age, reliance on the internet is so common and seems ubiquitous, yet billions of people...
SciShow
Good Morning, Philae!
The Philae lander is awake! And it's sending us data straight from Comet 67P!
TED Talks
Eric Liu: How to revive your belief in democracy
Civic evangelist Eric Liu shares a powerful way to rekindle the spirit of citizenship and the belief that democracy still works. Join him for a trip to "Civic Saturday" and learn more about how making civic engagement a weekly habit can...
SciShow
Cyborg Eyes and Stumpy the Dumpy Tree Frog: SciShow Talk Show #11
SciShow graphics guy Louey Winkler discusses LED contact lenses and the implications of enhancing and assisting human beings with technology, and then attempts to stump Hank with a physics riddle. Jessi from Animal Wonders shares Stumpy...
TED Talks
TED: Wiring an interactive ocean | John Delaney
Oceanographer John Delaney is leading the team that is building an underwater network of high-def cameras and sensors that will turn our ocean into a global interactive lab -- sparking an explosion of rich data about the world below.
TED-Ed
TED-Ed: The 4 greatest threats to the survival of humanity | TED-Ed
With the invention of the atomic bomb, humanity gained the power to destroy itself for the first time in our history. Since then, our risk of either extinction or the collapse of civilization has steadily increased. Just how likely are...
SciShow
How Space Shuttle Discovery got its Solar-powered Wings
If you want to get into space, you need combustible fuel. But if you want to stay operational in space, you need to harness the power of the sun itself.
Crash Course
Types of Bureaucracies: Crash Course Government and Politics
This week Craig Benzine breaks down the different types of bureaucracies. I mean sure, they’re all part of the executive branch, but some work more directly with the president than others. Some bureaucracies exist solely to independently...
TED Talks
How your brain responds to stories -- and why they're crucial for leaders | Karen Eber
How do the world's best leaders and visionaries earn trust? They don't just present data -- they also tell great stories. Leadership consultant Karen Eber demystifies what makes for effective storytelling and explains how anyone can...
TED Talks
Mark Pagel: How language transformed humanity
Biologist Mark Pagel shares an intriguing theory about why humans evolved our complex system of language. He suggests that language is a piece of "social technology" that allowed early human tribes to access a powerful new tool:...
Crash Course
Presidential Power: Crash Course Government and Politics
This week Craig looks at the expressed powers of the President of the United States - that is the ones you can find in the Constitution. From appointing judges and granting pardons, to vetoing laws and acting as the nation’s chief...