All along the east coast of the United States there are thousands of oval shaped pock marks, and scientists think they have a clue as to how they got there.

Jessi has a special guest today who is an expert on the night sky! Join Jessi and Sam the Bat to learn all about constellations, and to test your star knowledge by making flash cards!

The determinant has a very natural visual intuition, even though it's formula can make it seem more complicated than it really is.

For the dawn of a new decade, adventurer Bertrand Piccard offers us a challenge: Find motivation in what seems impossible. He shares his own plans to do what many say can't be done -- to fly around the world, day and night, in a...

The Red Planet was once more like Earth, with a thicker atmosphere and liquid water. Now, scientists are looking for clues to its past in the planet’s ancient fossil dunes, barchan dunes, and ghost dunes.

Many of the inanimate objects around you probably seem perfectly still. But look deep into the atomic structure of any of them, and you'll see a world in constant flux - with stretching, contracting, springing, jittering, drifting atoms...

In this video Paul Andersen explains how the wavelength is the distance between oscillations in a wave. In a longitudinal wave this might be the distance between areas of compression. In a transverse wave it might be the distance between...

If most people got on a skateboard, they would roll forward slowly for a few feet, then fall down and break their wrists. But there are a proud few who can do some pretty amazing tricks on a board, and they use physics to pull them off....

You or someone you know may have struggled to get a cowlick to just stay down already, but you can take solace in the fact that these inconvenient hair tufts have a lot to teach us about the world around us.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. The way we're taught to live has got to change, says author Casey Gerald. Too often, we hide parts of ourselves in...

To understand finance, search algorithms and even evolution you need to understand Random Walks.

In this video Paul Andersen explains how the electric field between oppositely and equally charged plates is uniform as long as you are far from the edge. The strength of the electric field can be determined by either the charge of the...

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.

In this video Paul Andersen explains how stimulated emission can be used to create coherent light. When an atom absorbs a photon it moves to a higher energy level through stimulated absorption. It may then release a photon and moves to a...

We are living in a world that is tantalizingly close to ensuring that no one need die of hunger or malaria or diarrhea, says economist Michael Green. To help spur progress, back in 2015 the United Nations drew up a set of 17 goals around...

The earliest time measurements were observations of cycles of the natural world, using patterns of changes from day to night and season to season to build calendars. More precise time-keeping eventually came along to put time in more...

Objects that fly faster than the speed of sound (like really fast planes) create a shock wave accompanied by a thunder-like noise: the sonic boom. These epic sounds can cause distress to people and animals and even damage nearby...

How do foxes know where to pounce when they can't see their prey? There's evidence they're using the Earth's magnetic field to help.

In this video Paul Andersen explains how an object with mass placed in a gravitational field experiences a gravitational force. On the Earth this gravitational force is known as weight. The gravitational force is equal to the product of...

If you visit a museum with a collection of modern and contemporary art, you're likely to see works that sometimes elicit the response, _My cat could make that, so how is it art?" But is it true? Could anyone create one of Jackson...

Some foundational ideas in linear algebra: Span, linear combinations, and linear dependence.

The cross product is a way to multiple to vectors in 3d. This video shows how to visualize what it means.

A mini-lesson about patterns in data.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on quantifying and modeling change. Two examples are included in the video and two additional examples are included in the linked thinking slides. TERMS Change - to...