TED-Ed
TED-Ed: The rise and fall of the Maya Empire’s most powerful city | Geoffrey E. Braswell
During the 8th century CE, warfare and failing agriculture forced Maya people to move north, to hotter, drier Yucatán. Because of its freshwater access, Chichen Itza became the most powerful Maya city, with nearly 50,000 citizens at its...
TED Talks
TED: What you can do to stop economic crime | Hanjo Seibert
It might sound like the plot of a movie, but economic crime is all around us — from drug trafficking and fraud to cybercrimes, tax evasion and more. Economic crime fighter Hanjo Seibert breaks down the complexities of money laundering...
SciShow Kids
How Will Humans Live on Mars? | Let's Explore Mars! | SciShow Kids
Squeaks and Jessi would love to visit Mars one day, but our neighboring planet is very different from Earth. Together, they make a travel plan and packing list that will help them overcome the challenges of life on Mars! Thanks to our...
PBS
100 Years of Relativity + Challenge Winners!
The results are in - on this weeks episode of Spacetime we reveal the answer to our Asteroid Challenge, as well as our T-shirt winners! Check out who saved the world!
PBS
The Trebuchet Challenge | Space Time
Kinetic and potential energy are defined as combinations of more basic quantities: position, velocity and mass. These combinations are chosen so that their sum is conserved. It’s actually remarkable that there’s any such combination of...
PBS
What Happens to a Helium Balloon in Freefall?
Hey Everyone! This week’s episode isn’t a full episode, but you should DEFINITELY STILL WATCH because we’re giving t-shirts away to a few of those who can correctly guess the answer to the challenge question. Watch this week’s episode to...
TED Talks
TED: The first-ever cargo ship powered by green fuel | Morten Bo Christiansen
The shipping industry is vital to the global economy, but it's also a huge contributor to the climate crisis. Morten Bo Christiansen, a leader of the energy transition for the global shipping company A.P. Moller – Maersk, talks to TED's...
TED Talks
TED: The growing megafire crisis -- and how to contain it | George T. Whitesides
Megafires, or fires that burn more than 100,000 acres, are becoming more frequent worldwide, wreaking havoc on landscapes and communities -- and fire experts say the problem is only going to get worse. George T. Whitesides is focused on...
SciShow
The Most Advanced Robots in the World
The most advanced robots in the world might not be exactly what you’re expecting. But they’re shaping humanity’s future. Hosted by: Michael Aranda
SciShow
Let's Go To Mars
Hank discusses the challenges involved in manned space travel to Mars, and sends us a message from his 17-year-old self.
SciShow
Why Can't We Design A Bear-Proof Trash Can?
Why is it so hard for us to keep the bears out of our trash? Well, it turns out that trash cans are basically like giant food puzzles for the bears, and they are determined to win... But, we can use their wily trash-nabbing instincts...
SciShow
Who Named the New COVID-19 Drug Bamlanivimab? | An Interview with Dr. Daniel Skovronsky
Earlier this month, we talked with Daniel Skovronksy, the Chief Scientific Officer of Eli Lilly, about their colorfully-named COVID-19 treatments. We also discussed the challenges of mass-producing antibodies and how medicine might...
TED Talks
TED: 4 ways to have healthy conversations about race | Afrika Afeni Mills
Learning how to have productive conversations about race is a necessary part of the human experience. Educator Afrika Afeni Mills says the best place to start is in the classroom -- because the earlier these skills are taught, the fewer...
TED Talks
TED: Mangroves, storm walls and other ways to protect coasts from climate change | Dave Sivaprasad
Nearly 40 percent of humanity lives near a coast -- and no two coasts are the same. How can these communities build resilience to the increasing risks of climate change? Climate advisor Dave Sivaprasad outlines how to tackle this complex...
TED Talks
TED: We need leaders who boldly champion inclusion | June Sarpong
We know diversity, equity and inclusion (DEI) boosts creativity and profits, but progress has been slow: today, nearly 90 percent of Fortune 500 CEOs are white males. It's time for leaders to become "rock stars" of inclusion -- and that...
TED Talks
TED: The massive machines cleaning Earth's atmosphere | Jan Wurzbacher
To restrain global warming, we know we need to drastically reduce pollution. The very next step after that: using both natural and technological solutions to trap as much excess carbon dioxide from the air as possible. Enter Orca, the...
PBS
The top library books people tried to ban or censor last year
Battles have erupted at schools, school boards and library meetings across the country as parents, lawmakers and advocacy groups are debating books. The American Library Association documented more than 1,200 demands to censor books and...
Curated Video
Phelps on retirement after 23 golds
US swimmer Michael Phelps officially bowed out of competitive action on Sunday, a day after winning a record 23rd Olympic gold medal in the men's 4x100-metre medley relay. The 31-year-old won five golds and a silver at the 2016 Games in...
PBS
India's Effort To Clean Up Sacred But Polluted Ganga River
The Ganga River, known as the Ganges under British rule, is one of the most revered waterways in the world -- and also among the most polluted. Stretching from the Himalayan foothills to the Bay of Bengal, it provides water to nearly...
PBS
The Future of Space Telescopes
The Kepler mission has determined that terrestrial planets are extremely common, and may orbit most stars in the Milky Way. But these planets are difficult to directly image because they're dense and small. Our Sun is about ten billion...
3Blue1Brown
Music And Measure Theory
How one of the introductory ideas in a field called "measure theory" can be thought of in terms of musical harnomy and dissonance.
Crash Course
What is a Game?: Crash Course Games
Welcome to Crash Course Games! In this series our host Andre Meadows is going to discuss the history and science of games. We're going to talk about video games of course, but also board games, role playing games, card games, even...
TED Talks
TED: How protest is redefining democracy around the world | Zachariah Mampilly
The democratic process is messy, complicated and often inefficient -- but across Africa, activists are redefining democracy by putting protest at its center. In an illuminating talk, political scientist Zachariah Mampilly gives us a...
TED-Ed
TED-ED: The myth of Arachne and Athena - Iseult Gillespie
From sailors who were turned into pigs, nymphs that sprouted into trees, and a gaze that converted the beholder to stone, Greek mythology brims with shape-shifters. The powerful Gods usually changed their own forms at will - but for...