Crash Course
World War II: Crash Course World History
In which John Green teaches you about World War II, aka The Great Patriotic War, aka The Big One. So how did this war happen? And what does it mean? We've all learned the facts about World War II many times over, thanks to repeated...
TED Talks
TED: Islamophobia killed my brother. Let's end the hate | Suzanne Barakat
On February 10, 2015, Suzanne Barakat's brother Deah, her sister-in-law Yusor and Yusor's sister Razan were murdered by their neighbor in Chapel Hill, North Carolina. The perpetrator's story, that he killed them over a traffic dispute,...
Crash Course
Immune System, part 3: Crash Course A&P
THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T cells...
TED-Ed
TED-Ed: Brendan Constantine: "The Opposites Game"
This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Brendan Constantine, directed by...
TED Talks
Alison Killing: There’s a better way to die, and architecture can help
In this short, provocative talk, architect Alison Killing looks at buildings where death and dying happen -- cemeteries, hospitals, homes. The way we die is changing, and the way we build for dying ... well, maybe that should too. It's a...
TED-Ed
TED-Ed: Philip A. Chan: How close are we to eradicating HIV?
The world is getting closer to achieving one of the most important public health goals of our time: eradicating HIV. And to do this, we won't even have to cure the disease. We simply have to stop HIV from being transmitted until...
SciShow
The Telescope That Revealed the X-Ray Universe
Some of the most exciting phenomena in space can’t be seen from Earth because our atmosphere soaks up high-energy light. That’s why NASA built Chandra, the most powerful X-ray telescope ever launched, and the observatory has helped...
Crash Course
The History of Electrical Engineering: Crash Course Engineering #4
Next stop on our tour of engineering’s major fields: electrical engineering. In this episode we’ll explore the history of telecommunications, electric power and lighting, and computers. We’ll introduce topics like magnetism, electrical...
SciShow
Is Australia Trying to Kill You
Australia: An entire continent so infested with deadly creepy crawlies and creatures of all kinds, it seems like it’s actively trying to kill you. But is the natural world really any more dangerous down under than anywhere else?
TED-Ed
TED-Ed: The rise and fall of the Kingdom of Man | Andrew McDonald
On a small island in the Irish Sea, fortresses preside over the rugged shores. This unlikely location was the birthplace of a medieval empire that lasted 200 years. Rulers built coastal fortresses on cliffs, roved the seaways, and threw...
Crash Course
The Weaponization of Outbreaks - Crash Course Outbreak Science
A sad reality that we have to face when studying outbreak science is that sometimes groups of people use outbreaks intentionally to inflict harm on another group. We call this "weaponizing an outbreak", and it's the focus of this episode...
Crash Course
Economic Depression and Dictators: Crash Course European History
We're still leading up to World War II, but first we gotta talk about the rise of the dictators. Today we talk about the rise of militaristic dictatorships in Germany, the Soviet Union, Japan, and Spain, and the economic depression that...
TED Talks
TED: Inside the mind of a former radical jihadist | Manwar Ali
For a long time, I lived for death, says Manwar Ali, a former radical jihadist who participated in violent, armed campaigns in the Middle east and Asia in the 1980s. In this moving talk, he reflects on his experience with radicalization...
Crash Course
Personal Identity: Crash Course Philosophy
Today Hank is building on last week’s exploration of identity to focus on personal identity. Does it in reside in your body? Is it in the collective memories of your consciousness? There are, of course, strengths and weaknesses to both...
MinuteEarth
The Problem With Life Expectancy
In order to truly understand differences among animal lifespans, we need to stop thinking about a specific number and start thinking about a distribution.
TED-Ed
TED-Ed: Which sunscreen should you choose? - Mary Poffenroth
Sunscreen comes in many forms, each with its own impacts on your body and the environment. With so many options, how do you choose which sunscreen is best for you? To answer that question, Mary Poffenroth explains how sunscreens work and...
TED-Ed
TED-Ed: How does chemotherapy work? | Hyunsoo Joshua No
During World War I, scientists were trying to develop an antidote to the poisonous yellow cloud known as mustard gas. They discovered the gas was irrevocably damaging the bone marrow of affected soldiers. This gave the scientists an...
TED Talks
TED: What it takes to make change | Jacqueline Novogratz
What can you do to build a better world? Sharing stories from her pioneering career dedicated to tackling poverty, Jacqueline Novogratz offers three principles to spark and sustain a moral revolution. Learn how you can commit (or...
TED Talks
TED: 12 truths I learned from life and writing | Anne Lamott
A few days before she turned 61, writer Anne Lamott decided to write down everything she knew for sure. She dives into the nuances of being a human who lives in a confusing, beautiful, emotional world, offering her characteristic...
MinuteEarth
Why You’re More Likely To Die In Winter
There’s a huge seasonal difference in death rates that is propelled by a variety of factors including pathogen behavior and anatomical response to temperature changes.
TED-Ed
TED-ED: Would you sacrifice one person to save five? - Eleanor Nelsen
Imagine you're watching a runaway trolley barreling down the tracks, straight towards five workers. You happen to be standing next to a switch that will divert the trolley onto a second track. Here's the problem: that track has a worker...
TED-Ed
TED-ED: Why do animals have such different lifespans? - Joao Pedro de Magalhaes
For the microscopic lab worm C. elegans, life equates to just a few short weeks on Earth. The bowhead whale, on the other hand, can live over two hundred years. Why are these lifespans so different? And what does it really mean to 'age'...
TED Talks
TED: Poems of war, peace, women, power | Suheir Hammad
Poet Suheir Hammad performs two spine-tingling spoken-word pieces: "What I Will" and "break (clustered)" -- meditations on war and peace, on women and power. Wait for the astonishing line: "Do not fear what has blown up. If you must,...
TED Talks
BJ Miller: What really matters at the end of life
At the end of our lives, what do we most wish for? For many, it's simply comfort, respect, love. BJ Miller is a hospice and palliative medicine physician who thinks deeply about how to create a dignified, graceful end of life for his...