We can make clocks that keep accurate time for millions of years. We can also make clocks with such high resolution they tick one billion billion times per second. So why can't we make a clock that does both?

Human territoriality results in some pretty ridiculous behaviors. And luckily, scientists have studied it in all kinds of situations.

One of the most famous elements in the periodic table doesn't really belong anywhere chemists would like to put it.

Recently, a group of scientists have declared that the start of the Anthropocene, the time of outsize human influence on Earth, to be Crawford Lake in Canada. But how can a time be a place? We'll explain, and maybe grab some maple...

Quantum mechanics has a lot of weird stuff - but there’s thing that everyone agrees that no one understands. I’m talking about quantum spin. Let’s find out how chasing this elusive little behavior of the electron led us to some of the...

After Harriet Tubman, famed conductor of the Underground Railroad, rescued dozens of people from slavery and served in the Civil War, she settled down in the small city of Auburn in upstate New York and continued a life of service. The...

At a special housing development in Oregon, families who adopt foster children live side by side with seniors who volunteer their time in exchange for affordable rent. The NewsHour's Cat Wise reports on how members of the...

This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this...

Remember pre-school? If not, IT WAS SO MUCH EASIER! But when you were stacking blocks and figuring out which block went into which shaped hole, you were learning about properties. In this episode of Crash Course Kids, Sabrina talks about...

We all know the words around electricity -- _charge," _positive," _battery" and more. But where do they come from and what do they really mean? Let the history of these words illuminate the physics of electric phenomena.

Check out Grant’s channel: 3blue1brown.



This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein,...

So, "modern" is kind of a loaded term, but today we're going to talk about modern life in Europe, as it looked around the time the 19th century turned into the 20th. We'll look at what life was like in the rapidly growing urban centers...

Hank explores different ways of understanding identity – including the Indiscernibility of Identicals, and essential and accidental properties. In what ways does affect identity? In what ways does it not? What does it mean for a thing to...

How do you think about the column space and null space of a matrix visually? How do you think about the inverse of a matrix?

A quick explanation of e^(pi i) in terms of motion and differential equations

The Higgs Boson. What more need be said?

How do you think about the column space and null space of a matrix visually? How do you think about the inverse of a matrix?

When you think about Einstein and physics, E=mc^2 is probably the first thing that comes to mind. But one of his greatest contributions to the field actually came in the form of an odd philosophical footnote in a 1935 paper he co-wrote...

Nothing is original, says Kirby Ferguson, creator of Everything is a Remix. From Bob Dylan to Steve Jobs, he says our most celebrated creators borrow, steal and transform.

At TEDWomen, Tony Porter makes a call to men everywhere: Don't "act like a man." Telling powerful stories from his own life, he shows how this mentality, drummed into so many men and boys, can lead men to disrespect, mistreat and abuse...

A quick explanation of e^(pi i) in terms of motion and differential equations

Fifty percent of traffic accidents happen at intersections. Gary Lauder shares a brilliant and cheap idea for helping drivers move along smoothly: a new traffic sign that combines the properties of "Stop" and "Yield."

The racial wealth gap in the United States is shocking: white families have a median wealth nearly 10 times greater than that of Black families. How did we get here, and how can we stop the gap from growing? Wealth equity strategist...

Drawing curves that fill all of space, and a philosophical take on why mathematics about infinite objects can still be useful in finite contexts.