From the sharp mouthparts of mosquitoes to the sticky feet of geckos, researchers have found all kinds of amazing adaptations in the natural world that could be useful in the operating room.

Cha
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WASPS &...

When you picture a rocket, you might imagine a giant ship carrying lots of fuel, people and supplies. But what if the next wave of spacecraft were small enough to fit into our pockets? Dhonam Pemba details the future of microspacecraft,...

Have you ever been sitting down for a long time and had your legs fall asleep? It feels really weird and can make it hard to walk for a little while! So what makes your legs fall asleep, and why does it feel all prickly when they start...

Ever wondered what causes that strange tingling feeling? Well, settle in as Quick Questions explains how it works. Just be careful how you sit.

Trees need water to grow, so how do Redwood trees get so big, despite the fact that it gets so dry?



First Grade Next Generation Science

Standards

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osscutting Concept:...

We’re told that all snowflakes are unique. But when you really think about them, snowflakes get even more interesting - as ice crystals forming in 3D space, why are snowflakes basically 2D?

Jessi and Squeaks just spent the day hiking and sketching evergreen trees in their field journals! A lot of evergreen trees look pretty similar, but Jessi knows some fun ways to tell them apart. Join us to find out how!

Jupiter's storms cover the planet, but the ones at the planet’s poles have mystified astronomers for years: why haven’t they merged together yet?

Can you guess how tall the tallest tree is? Neither could we! Tag along with Jessi and Squeaks to learn all about the world’s tallest tree!

True Pines (conifer trees in the genus Pinus) are often confused with other members of the Pinaceae family like Picea (Spruces), Abies (Firs), Pseudotsuga (Douglas-firs) or Larix (Larches). So is very likely that your Christmas tree is...

In the 1960s, the USA almost put a ring around the Earth by launching hundreds of millions of tiny copper needles into space in an attempt to create a reliable boost for their communications systems.

How to Make Blood Sugar Testing Less Painful

Howcast - Ashamed that you gave into the convenience of an artificial tree? Fool people into thinking you chopped it down yourself.

Howcast - Learn how to do a yarn over in this knitting tutorial from Howcast.

Howcast - Learn how to administer female fertility drugs in this Howcast video about infertility.

Howcast - Learn how to select and change a sewing machine needle from designer Jennifer Wiese in this Howcast tutorial.

Howcast - Learn the basics of knitting with circular needles from expert Jessica Kaufman in this Howcast video.

Howcast - Learn how to work with a circular needle using the traditional method from circular knitting expert Jessica Kaufman in this Howcast video.

Howcast - Learn how to cast on for circular knitting from expert Jessica Kaufman in this Howcast video.

Howcast - Learn the difference between circular knitting needles and double-pointed needles from expert Jessica Kaufman in this Howcast video.

Howcast - Learn how to join the round on double-pointed needles from circular knitting expert Jessica Kaufman in this Howcast video.

Howcast - Learn how to distribute stitches on double-pointed needles in circular knitting from expert Jessica Kaufman in this Howcast video.

Howcast - Learn how to work with two circular needles from circular knitting expert Jessica Kaufman in this Howcast video.

Howcast - Don't let your holiday season get cut short by a shedding tree. Practice good shopping and care techniques to keep your tree healthy.