Astrophysicists have discovered a black hole that for millions of years has been blasting vast particle beams in opposite directions across the sky. And has recently swiveled to point its one of these jets directly at us. Is this an...

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

Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple and green — to cope with the environments it passes through. Can you figure out how to apply the colors so the probe survives the...

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

Every 24 hours, wind generates enough kinetic energy to produce roughly 35 times more electricity than humanity uses each day. And unlike coal or oil, this resource is totally renewed each day. So how can we harness this incredible...

For humans, being upside-down isn’t a comfy way to hang out for very long, but for these six animals, upside-down feels just right!

Cha
pters
THREE-
TOED SLO
TH
0:38
U
PSIDE-DO
WN JELLYFIS
H

...

Hank explains how quasars and blazars are both the same thing - just oriented differently in respect to us - and how that impacts the way we perceive them and how it also effects the ways we can study them.

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

Solar sail technology was once only theoretical, but it's now being developed to propel spaceships. How did the first solar sails get into space, and why?

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

Why are some stones round and others flat?

A super bright flash in the sky might be the birth of a supernova remnant and it turns out there's more than one way to build a binary star system.

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

Sometimes it just feels like someone is staring at you, even if you can’t see them. It can be annoying, but our brains have a reason for it.

Racism morphs, spreading and hiding behind numerous half-truths and full-blown falsities about where it lives and who embodies it. In this actionable talk, political scientist Candis Watts Smith debunks three widely accepted myths about...

In 1967, researchers gathered to answer a long-running scientific question: just how long is a second? It might seem obvious at first. A second is the tick of a clock, the swing of a pendulum, the time it takes to count to one. But how...

Chemical reactions are constantly happening in your body -- even at this very moment. But what catalyzes these important reactions? Vance Kite explains how enzymes assist the process, while providing a light-hearted way to remember how...

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

Howcast - Learn how to read body language in a bar with this Howcast video.

Howcast - Learn how to spot body movements that reveal sexual attraction in this Howcast video about body language.

Howcast - Learn how to sample text format with Adobe Illustrator from expert Will "Focus" Dubois in this Howcast video.

On November 1, 1962, the Soviet Union launched the Mars 1 spacecraft on a mission to fly by the Red Planet.



‘On This Day in Space’ Video Series on

Space.com

While it did end up flying by Mars, the mission was not...

Pupil outcome: I can plan a poster. Key learning points: - Planning is a key part of the design process that can help to improve the finished product. - A planning template can help plan and structure the content and layout of a digital...

How do we get from A to B? Cardinal and intermediate directions are a tool in geography that help us navigate the world around us.