After Hubble and Webb, what's the future of space telescopes? Two ideas in planning stages right now involve the space-age versions of umbrellas and glitter.

Today we’re going to talk about how computers see. We’ve long known that our digital cameras and smartphones can take incredibly detailed images, but taking pictures is not quite the same thing. For the past half-century, computer...

It’s easy to imagine that our galaxy is basically frozen in time from the perspective of a human lifespan, but in fact, the Milky Way is incredibly dynamic and will undergo some pretty amazing changes in only a few decades!

The Limb of the Sun

A very clever proof of Euler's characteristic formula using spanning trees.

Like it or not, the ground you’re walking on is always on the move! Join Jessi and Squeaks to learn how this movement can sometimes lead to earthquakes!

Ever notice how cereal clumps up in your bowl, or how cereal sticks to the edges of the bowl? Bubbles in beverages do the same thing.You've probably seen this surface tension and buoyancy at work, but did you know there's some...

Dr. Ellen Ochoa is incredible! She published over a dozen papers, co-filed three patents, and was a NASA engineer, all before becoming an astronaut and spending nearly a thousand hours in space.

New ReviewIn this video, Mrs. C shows you how to find the **perimeter of composite figures**—shapes made up of squares, rectangles, triangles, and semicircles. You’ll learn how to: Identify which sides are on the outside of the figure Add up all...

Winner, winner, chicken dinner!

It's a math teacher's dream!

In this video, you will learn about additional database services.

Howcast - Become a wrap artist! Learn how to make every present look festive, no matter what shape or size.

Howcast - Making homemade fortune cookies is a snap, and your loved ones will get a kick out of their personalized predictions.

Howcast - Learn how to make sugar flowers from pastry chef Amanda Oakleaf in this cake decorating video from Howcast.

Howcast - Learn how to deal with broken teeth from Shane Methal DDS in this Howcast video.

Howcast - Learn the options for straightening crooked teeth from Shane Methal DDS in this Howcast video.

Howcast - Learn how to use concealer and highlighter for drag queen makeup in the first video of a two-part Howcast series with artist Kenneth Llambelis.

Howcast - Learn how to add texture and how to blend with acrylic paint from painter Linda Rhea in this Howcast video.

Howcast - Learn how to make a ladybug cake for a kids' birthday party from Essential Cakes' Etwin Gordon in this Howcast video, part 5 of a 7-part series.

Howcast - Learn how to make layers on V folds for pop-up cards and crafts in this Howcast video with expert Jessica Tice-Gilbert.

Howcast - Learn how to make V-folds for pop-up cards and crafts in this Howcast video with expert Jessica Tice-Gilbert.

Howcast - Learn how to make layers for pop-up cards and crafts in this Howcast video with expert Jessica Tice-Gilbert.

Howcast - Learn how to make boxes for pop-up cards and crafts in this Howcast video with expert Jessica Tice-Gilbert.