You’ve probably heard of Charles Darwin, but before we get to him, you really need to understand how different people, throughout the seventeenth and eighteenth centuries, tried to answer the same question: “what is life?”

Over the last four episodes, we’ve examined some of the stories that make up the idea of a “revolution” in knowledge-making in Europe. But we can’t understand this idea fully, without unpacking another one—the so called Age of...

Life in a desert can be tough, but the plants, animals, and people that live there have some special skills to help them survive!

When you think of natural history museums, you might picture exhibits filled with ancient lifeless things, like dinosaurs or meteorites. But behind that educational exterior, there are hidden laboratories where scientific breakthroughs...

Scientists have learned more about why royal jelly makes queen bees, and we peek at the tiny and terrifying mandibles of trap-jaw ants.

Why do humans cook? Holidays are celebrated in many ways, but chances are they involve eating, and eating a LOT. Ever wonder why we cook our food? We do it because it tastes good, of course, and because our customs and traditions are...

GPS devices aren't just for keeping you from driving into a lake. They're also helping lots of scientists in unexpected ways.

In which Hank details the five scariest things that will likely happen because of climate change.

Squeaks and Mister Brown do some experiments with soil, and learn all about why different soils feel different! Disciplinary Core Ideas: PS1.A: Structure and Properties of Matter - Matter can be described and classified by its observable...

Hank gets to the more violent part of community ecology by describing predation and the many ways prey organisms have developed to avoid it.

Thanks to my grandmother for inspiring this story, and to my mother for helping make it. Bird poop was the gateway fertilizer that turned humanity onto the imported-chemical-based farming system of modern agriculture....

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 Disciplinary Core Ideas: ESS1.C: The History of Planet Earth - Some events happen very...

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 things in any area,...

With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and...

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

It's raining where Jessi and Squeaks live, so they decided to bust out some books and read up on a special kind of forest where it rains almost every day!

Paul Andersen reviews the major components of the homeostasis. He explains how organisms respond to abiotic and biotic factors in their environment with feedback loops. He shows how responses can be behavioral or physiological.

Hank brings us to the next level of ecological study with ecosystem ecology, which looks at how energy, nutrients, and materials are getting shuffled around within an ecosystem (a collection of living and nonliving things interacting in...

Paul Andersen covers the processes of aerobic and anaerobic cellular respiration. He starts with a brief description of the two processes. He then describes the important parts of the mitochondria. He explains how energy is transferred...

Sustaining life requires substantial energy and matter inputs. The complex struc- tural organization of organisms accommodates the capture, transformation, trans- port, release, and elimination of the matter and energy needed to sustain...

Sometimes, plants do unexpected things. Like control their own body temperature.

What do gray wolves, elephants, and parrotfish have in common? They're all keystone species, which means they have an especially large impact on their habitat. SciShow explores how these animals keep their ecosystems running.

It's the end of this first year of Crash Course Kids and we've learned so many things. In this episode, Sabrina takes us on a tour of some of the ideas we've talked about and how they fit into our lives. Also, what all of these ideas...

Plants have their own interconnected networks that allow them to communicate with each other, sometimes over considerable distances!