Parasites: Crash Course Zoology #11 0 (0)

From Crash Course. Nearly every environment on Earth — and that includes animals — is home to some kind of parasite. Today we’re going to talk about parasites not just because they’re an essential part of their ecosystems, but also because by studying them we can learn more about their hosts and even their shared…

Reproduction: Crash Course Zoology #9 0 (0)

From Crash Course. Today we’re (finally) going to talk about animal babies! But more than just puppies and piglets we’re going to be looking at their genes. Sexual reproduction is part of the very definition of what it means to be an animal and as you’ll see life has found a variety of methods to…

Ancestral & Weird Senses: Crash Course Zoology #8 0 (0)

From Crash Course. Today, we’re going to talk about one of the earliest animal senses, one that every life form we’ve ever found seems to have — chemosensation — or our sense of taste and smell. We’ll discuss how animals use these senses to explore their environment and communicate, and how that pair of nostrils…

Population & Food: Crash Course Geography #16 0 (0)

From Crash Course. Today we’re going to talk about the link between population and food energy. As the world’s population keeps growing, finding ways to provide enough food and water for everyone while supporting a sustainable environment can be tricky! We’ll take a closer look at food chains and how energy is transferred between different…

Slave Codes: Crash Course Black American History #4 0 (0)

From Crash Course. Slave codes were a method of protecting the investment of white enslavers in the Colonies by restricting the lives of enslaved people in almost every imaginable way. The codes restricted enslaved people’s ability to move around, or engage in commerce that could make them financially independent – they restricted the very opportunities…

How Animals Hear: Crash Course Zoology #7 0 (0)

From Crash Course. Today we’re going to talk about what an ear even is, how ears have evolved, how they work, and some of the cool ways animals have tweaked their ears to work for their lifestyle. So perk up whatever you use for hearing because we’re going to be sending vibrations your way for…

What Are Ecosystems? Crash Course Geography #15 0 (0)

From Crash Course. Today we’re going to take a closer look at ecosystems — which are communities of living organisms in an area interacting with their environment — and how this relationship between the amount of energy a place receives and the movement of nutrients is what makes the incredible diversity of life possible. We’ll…

How & What Animals Eat: Crash Course Zoology #4 0 (0)

From Crash Course. Animals have evolved to eat a lot of different things, even stuff that barely passes for food, and it shapes our entire lives from what we look like to where we live. Today, we’ll talk about why being a carnivore is just easier than being a herbivore, why there are so few…

Crash Course Black American History Preview 0 (0)

From Crash Course. Over the course of 50 episodes, we’re going to learn about Black American History. Clint Smith will to teach you about the experience of Black people in America, from the arrival of the first enslaved Black people who arrived at Jamestown all the way to the Black Lives Matter movement. Watch our…

🐌 Crash Course Zoology Preview 0 (0)

From Crash Course. Welcome to Crash Course Zoology! In this fourteen-episode series made in partnership with PBS and Nature, Crash Course Zoology will take a rapid deep dive into the weird and wonderful biology of animals. Host, wildlife ecologist, and conservation scientist, Dr. Rae Wynn-Grant will guide us across the tree of life as we…

☁️ What is a Cloud? Crash Course Geography #10 0 (0)

From Crash Course. In addition to just being beautiful one-of-a-kind panoramas in the sky, clouds can tell us so much about how energy and weather patterns flow around the globe. Today, we’ll talk about how clouds form, the three main types (cirrus, status, and cumulus), explain how and why we get rain, and end with…

What Does the Atmosphere Do? Crash Course Geography #6 0 (0)

From Crash Course. Much like a cell membrane, our atmosphere forms a protective boundary between outer space and the biosphere that allows for all life to exist on Earth’s surface. Today, we’re going to talk about its composition and layers (the troposphere, stratosphere, mesosphere, and thermosphere), follow the path of a sunbeam of light as…

Writing Systems: Crash Course Linguistics #16 0 (0)

From Crash Course. All societies have spoken or signed language, but not all languages have a written form. Since writing developed in different ways in different places, writing systems differ greatly around the world. In this final episode of Crash Course Linguistics, we’ll learn about writing systems, also called orthographies, the different components that make…

Computational Linguistics: Crash Course Linguistics #15 0 (0)

From Crash Course. Computers are pretty great, and we use them for different language tasks every day. But teaching computers to understand language is surprisingly difficult! In this episode of Crash Course Linguistics, we’ll learn about programming computers to process human language, which is called computational linguistics, or natural language processing. We’ll look at the…

What is Physical Geography? Crash Course Geography #4 0 (0)

From Crash Course. Traditionally, geography is studied as two interconnected parts: physical geography and human geography. For the first half of this series, we will be focusing on physical geography, which is all about recognizing the characteristics of the environment and the processes that create, modify, and destroy those environments. But remember, human-environment interactions are…

Radical Reactions & Hammond’s Postulate 0 (0)

From Crash Course. Throughout this series we’ve mostly talked about pairs of electrons, but electrons don’t always have a buddy. An atom or group of atoms with a single unpaired electron is called a radical. In this episode of Crash Course Organic Chemistry, we’ll learn all about radicals including the three key steps in a…

What is a Map? Crash Course Geography #2 0 (0)

From Crash Course. From navigating a cross-country road trip (or just finding the nearest coffee shop), to analyzing election results (or the latest meme on K-pop group popularity), maps play a huge role in how we interpret the world! Today, we’re going to talk about the differences between reference maps and thematic maps, take a…

Crash Course Geography Preview 0 (0)

From Crash Course. Welcome to Crash Course Geography hosted by Alizé Carrère! This course with be split into two parts. In the first half, we will focus on physical geography or the processes and phenomena of the physical world both above and below the Earth’s surface. We’ll ask questions like, "why is the seafloor so…