You may love or hate pumpkin spice, but it is undeniably an American cultural phenomenon. Luckily, science has some insight as to why this might be.

In a deeply moving letter to her grandmother, Xiye Bastida reflects on what led her to become a leading voice for global climate activism -- from mobilizing school climate strikes to speaking at the United Nations Climate Summit...

The Physics we're talking about today has saved your life! Whenever you walk across a bridge or lean on a building, Statics are at work. Statics is the study of objects when they're NOT accelerating. In this episode of Crash Course...

When you think of matrices as transforming space, rather than as grids of numbers, so much of linear algebra starts to make sense.

Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged in an organized manner, but there are nearly infinite other ways for those same things to...

The legendary chimpanzee researcher Jane Goodall talks about TACARE and her other community projects, which help people in booming African towns live side-by-side with threatened animals.

Sometimes our behavior and our beliefs just… don’t match. And a lot of times this mismatch can lead to stress. What’s happening in our brains when we’re inconsistent? Can we learn anything from this discomfort?

In this video Paul Andersen explains how ecosystems respond to disruptions. Disruptions can cause changes in the number and variety of organisms. It can also lead to migration, extinction or even speciation. Ecosystems that have a...

Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to...

Got a bad habit you just can't seem to break? That's because it's literally wired into your brain. Every single thought, action, and feeling changes your brain. When repeated enough times, a habit is formed. This week we'll talk about...

What IS Angular Momentum?

It's time to invest in face-to-face training that empowers employees to have difficult conversations, says Tamekia MizLadi Smith. In a witty, provocative talk, Smith shares a workplace training program called "I'm G.R.A.C.E.D." that will...

Meeting new people is exciting, but also kind of overwhelming and you might have found yourself wondering if they really liked you. But turns out, they do really like you most of the time, and you might be just too hard on yourself.

What does it mean to be civil? Journalist Steven Petrow looks for answers in the original meaning of the word, showing why civility shouldn't be dismissed as conversation-stifling political correctness or censorship. Learn three ways we...

Today we explore the penultimate ethical theory in this unit: contractarianism. Hank explains Hobbes’ state of nature, and implicit and explicit contracts, as well as the Prisoner’s Dilemma, and the benefits, and costs, of violating...

Today we're going to talk about rivers and how these dynamic, delicate, yet powerful systems are able to constantly change the landscape. We'll focus on the Zambezi River in Southeast Africa following its main features from the...

Higher education remains rooted in rigid, traditional structures and tracks -- and it's at risk of getting left behind in favor of expanded access, greater flexibility and tailored learning. Educator Tyler DeWitt explains how innovations...

Sometimes culture can seem invisible like when we're surrounded by signals that tell us we're with others who are like us, but if we live or travel somewhere where the traits that define social norms are not our traits, culture can...

Did you know you have functioning neurons in your intestines -- about a hundred million of them? Food scientist Heribert Watzke tells us about the "hidden brain" in our gut and the surprising things it makes us feel.

Bill and Webb want to reach a button that is really high up on the wall, so Mister Brown teaches them how to use engineering and teamwork to make a high up button pusher!



K-2 Next Generation Science...

Jessi and Squeaks grab a snack and learn all about why boiling eggs makes them hard!



Second Grade Next Generation Science

Standards

Disc

iplinary Core Ideas:

PS1.A: Structure and Properties of...

In which Hank shows you that, while it may seem like the Universe is messing with us, equilibrium isn't a cosmic trick. Here, he shows you how to calculate equilibrium constant & conditions of reactions and use RICE tables all with...

Have you ever heard of the Peppered Moth? It's a great example of how living things can change because their environment has changed. And it's not just them! There used to be giant insects roaming the world, but they got smaller through...

Paul Andersen explains how signal transduction pathways are used by cells to convert chemical messages to cellular action. Epinephrine is used as a sample messenger to trigger the release of glucose from cells in the liver. The...