No, technically Earth doesn't orbit the Sun. Yes, technically sound can travel through space. Over the years we've built up a lot of myths and misconceptions about astronomy. But of course some are more flat-out false than...

If you've ever heard about things like mammoths being found in permafrost, you may have an image in your head of what that looks like. But you might be wrong! So let's talk about what permafrost really is, why it's so important, and...

Over his decades of farming and ranching, Gabe Brown has noticed a troubling trend: the conventional farming techniques he used were degrading the soil and harming nature. He shares how his family farm turned things around by adopting...

Last week, NASA released some pretty cool Mars news: Curiosity found even more evidence to indicate the planet could’ve been habitable billions of years ago.

It may not appear very lively six feet underground, but a single teaspoon of soil contains more organisms than there are human beings on the planet. From bacteria and algae to fungi and protozoa, soils are home to one quarter of Earth's...

From spooky-looking towers that belch white "smoke" to a mountain range in the middle of the Atlantic ocean, the seafloor is full of features as dynamic as the surface! That's part of why we've done many SciShow episodes about the ocean....

In ancient Egypt, there was a spell that declared, "Be far from me, O vile cockroach." Thousands of years later, we're still trying to oust these insects. But from poison traps to brandished slippers, cockroaches seem to weather just...

Death is what fungi are all about. By feasting on the deceased remains of almost all organisms on the planet, converting the organic matter back into soil from which new life will spring, they perform perhaps the most vital function in...

When you picture the lowest levels of the food chain, you might imagine herbivores happily munching on lush, living green plants. But this idyllic image leaves out a huge (and slightly less appetizing) source of nourishment: dead stuff....

Deep in the ocean, fluffy bits of organic matter fall like snow. But this marine snow isn’t just pretty; it’s an essential part of our ocean food webs and our global climate!

Trees come from seeds, and birds come from eggs, but where does all the soil and dirt come from?



Second Grade Next Generation Science

Standards

Disc

iplinary Core Ideas:

ESS1.C: The History of...

Jessi and Squeaks make a new friend named Grady, and he teaches them about all the living things you can find in soil!



Disciplinary
Core Idea:
LS4.D: Biodiversity and Humans - There are many different kinds of living...

A SciShow Kids viewer has asked us: What is dirt made of? Join Jessi to get the dirt on … dirt!

Splinters are gross, but you might want to watch this before grabbing the tweezers.

Science Kids Arctic Tundra Biome V1-0002

The Arctic tundra is a unique and vital ecosystem characterized by its frozen permafrost and extreme conditions. This biome is home to a diverse array of resilient plant and animal species...

Howcast - Learn home composting do's and don'ts in this Howcast video featuring Alegre of Green and Greener.

Clay soil lacks the porosity to allow plants to grow well in it. By adding the right materials to it, clay soil can better sustain plant growth.

The ancient forests of the Pacific Northwest are home to giant trees and many secrets, which science is just beginning to understand. But these forests are at risk of disappearing. In British Columbia on First Nations territory, a small...

Ever wonder why bones can survive hundreds of years without decomposing? This is due to the unique composition of bone. Bone is primarily composed of a very stable protein called collagen and the mineral calcium. The association between...

Fuel formed over millions of years, in conditions of high heat and pressure, from the fossilised remains of dead organic matter such as plants and animals.
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A Twig Science
Glossary Film.
Key scientific terms...

Still in its early stages, nanotechnology has the potential to change our world. What is it and how could it be used in the future? Chemistry - Atoms And Bonding - Learning Points. Nanotechnology is engineering on the smallest scale....

Learn how scientists overcame huge challenges to land a probe on Saturn's moon, and why Titan is of special interest to life on Earth. Physics - Universe - Learning Points. The Cassini-Huygens probe took seven years to travel over 1...

Find out why this unassuming bird is one of nature's master architects. Biology - Animal Kingdom - Learning Points. Malleefowl are large birds native to Australia. Malleefowl live a solitary existence for most of the year, but they mate...

Discover the millions of microorganisms in soil.
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Material processes - Classifying ma
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erials - Soil />

Learning Points
Soil is a mixture of rock partic
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es, organic matter, air and...