Temporada 2
Crash Course Biology
TEMPORADAS:
EPISODIOS:
2x01 Episodio 1
Introduction to Biology
06 de junio del 2023
13 min
Biology is the study of life—a four-letter word that connects you to 4 billion years worth of family tree. The word “life” can be tricky to define, but a shared set of characteristics helps biologi...
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2x02 Episodio 2
The Scientific Method
13 de junio del 2023
15 min
Science offers a way of discovering and understanding the world around us, driven by questions and tested with evidence. And it’s a twisty-turny team effort— you won’t find many lone geniuses out t...
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2x03 Episodio 3
What Biologists Do
27 de junio del 2023
13 min
A biologist’s natural habitat is anywhere questions about life are being asked—whether the subject is a nematode or a narwhal, a single cell, or a whole ecosystem. In this episode of Crash Course B...
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2x04 Episodio 4
How Life is Organized
11 de julio del 2023
14 min
Here on Earth, life is dizzyingly diverse—but it’s also surprisingly organized. A sense of order structures life and its processes, from the tiniest cell to the total sum of every living thing. In ...
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2x05 Episodio 5
Why Did All These Elephants Die? (Intro to Ecology)
18 de julio del 2023
14 min
Ecology is the study of the interactions of living things with each other and their environment. It’s a field that not only lets us explore the interconnections between living things, but also how ...
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2x06 Episodio 6
How Species Make and Break Friendships (Community Ecology)
01 de agosto del 2023
15 min
Community ecology is the study of interactions between different species of living things, and lets ecologists examine the effects of predator-prey relationships, parasites, and mutually beneficial...
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2x07 Episodio 7
How Did We Save The Bald Eagle? (Population Ecology)
08 de agosto del 2023
14 min
When the Bald Eagle population started to decline in the mid-20th century, scientists began to ask why. Population ecology, the study of organisms of the same species, played a big role in answerin...
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2x08 Episodio 8
What Is Climate Change?
15 de agosto del 2023
14 min
Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing like the climate change we’re experiencing now. In this episode of Crash Course Biology, we’ll talk...
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2x09 Episodio 9
The Effects of Climate Change
22 de agosto del 2023
12 min
Climate change shakes up all of Earth’s systems, including the living ones. In this episode of Crash Course Biology, we’ll see how climate change’s effects rattle the entire chain of life. Changes ...
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2x10 Episodio 10
How Do We Keep Life's Jenga Tower From Toppling? (Conservation Biology)
29 de agosto del 2023
14 min
Some scientists believe we are in the middle of Earth’s sixth mass extinction: a big, precarious game of Jenga that involves every ecosystem on the planet. In this episode of Crash Course Biology, ...
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2x11 Episodio 11
What a weirdly long giraffe nerve can teach us about evolution
05 de septiembre del 2023
14 min
From a single-celled common ancestor, evolution has brought us all of Life’s Greatest Hits — including butterflies, beetles, bacteria, and human beings. In this episode of Crash Course Biology, we’...
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2x12 Episodio 12
Microevolution: What's An Allele Got To Do With It?
12 de septiembre del 2023
13 min
Whether we’re talking about tigers, trees, or tarantulas, evolution happens at the level of the population. In this episode of Crash Course Biology, we’ll find out how natural selection, gene flow,...
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2x13 Episodio 13
Natural Selection: Life's Way of Stayin' Alive
19 de septiembre del 2023
13 min
There are lots of ways that evolution happens, and natural selection is just one of them. In this episode of Crash Course Biology, we’ll find out how this process works and shapes traits in all liv...
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2x14 Episodio 14
Why do we have different skin colors? (Population Genetics)
04 de octubre del 2023
13 min
In this episode of Crash Course Biology, we’ll learn about the ways population genetics reveals how groups of living things evolve—by comparing genetic similarities and differences. We’ll discover ...
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2x15 Episodio 15
Where Do Species Come From? (Speciation)
10 de octubre del 2023
13 min
How can you tell two species apart? It’s not always simple. In this episode of Crash Course Biology, we’ll learn about speciation—a process that can happen over millions of years, or within a singl...
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2x16 Episodio 16
How did life begin? (Evolutionary History)
17 de octubre del 2023
13 min
Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. W...
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2x17 Episodio 17
How We're All Related (Phylogeny)
24 de octubre del 2023
14 min
Crocodiles, and birds, and dinosaurs—oh my! While classifying organisms is nothing new, phylogeny— or, grouping organisms by their evolutionary relationships—is helping us see life in a whole new l...
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2x18 Episodio 18
Humans Develop Butt First (and other insights from the Tree of Life)
31 de octubre del 2023
13 min
Everywhere you look on Earth, you’ll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. And incredibly, everything alive today, and everything that’s ever lived, i...
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2x19 Episodio 19
Humans Didn't Evolve From Chimps (Human Evolution)
07 de noviembre del 2023
13 min
What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex ...
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2x20 Episodio 20
What is Life Made of? (Carbon & Biological Molecules)
14 de noviembre del 2023
14 min
Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, ...
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2x21 Episodio 21
A Love Letter to H2O: Water & pH
28 de noviembre del 2023
13 min
This is a love letter to water, life’s solvent, and one of the most wonderful molecules around. In this episode of Crash Course Biology, we’ll learn about how water’s polarity and hydrogen bonding ...
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2x22 Episodio 22
How We See What We Can't See (Microscopes)
05 de diciembre del 2023
13 min
There’s an immense world of tiny stuff within us and around us—but how do we know about it? In this episode of Crash Course Biology, we’ll discover how we see what we can’t see, thanks to the help ...
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2x23 Episodio 23
A Tour of the Cell
12 de diciembre del 2023
14 min
The cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has advanced. In this episode of Crash Course Biology, we’ll take a l...
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2x24 Episodio 24
How Does Stuff Get Into Your Cells? (Cell Membranes)
19 de diciembre del 2023
13 min
The cell membrane is a protein-studded phospholipid bilayer that not only protects our cells, but also regulates what goes in and out. In this episode of Crash Course Biology, we’ll look at the str...
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2x25 Episodio 25
How Do Cells Communicate? (Cell Communication)
09 de enero del 2024
11 min
Even though it might seem like our bodies are on autopilot, there is a whole lot happening inside us to keep things moving. In this episode of Crash Course Biology, we’ll learn that our cells are i...
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2x27 Episodio 27
How do cells get their energy? (Electron Transport Chain)
23 de enero del 2024
13 min
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2x32 Episodio 32
Nature? Nurture? Not so simple: Genetic Traits
27 de febrero del 2024
13 min
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2x33 Episodio 33
Our Instruction Manual for Existing: DNA Structure & Replication
05 de marzo del 2024
13 min
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2x36 Episodio 36
How Genes Express Themselves
28 de marzo del 2024
12 min
If nearly all your cells have the same DNA, why are muscle cells so different from skin cells? In this episode, we’ll learn how gene expression is regulated in eukaryotes, and how methylating DNA, ...
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2x37 Episodio 37
Is drinking milk a Superpower? Genetic Mutations
02 de abril del 2024
13 min
Science fiction is full of superpowered mutants, but in reality, mutations are much more diverse and complex. Sometimes, they can change someone’s entire body, and other times, we don’t notice them...
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2x38 Episodio 38
We’re full of bacteria!
09 de abril del 2024
10 min
Bacteria often get a bad rap, but they’re some of our best partners in science and medicine! In this episode, we’ll explore what bacteria are doing with their DNA — including how they can trade it ...
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2x39 Episodio 39
How Do Vaccines Work?: Viruses & Vaccines
16 de abril del 2024
13 min
From the flu to COVID-19, viruses are a major threat in our everyday lives. In today’s episode of Crash Course Biology, we’ll learn why viruses are like genes in a box, and how they invade and spre...
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2x40 Episodio 40
Algorithms Aren’t Just for TikTok: Bioinformatics
23 de abril del 2024
11 min
On its own, a huge DNA sequence is a meaningless pile of data — so, how do biologists figure out what it means? They turn to the power of bioinformatics! In this episode, we’ll learn what bioinform...
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2x41 Episodio 41
Why We Aren’t Just One Big Cell: Multicellular Function
30 de abril del 2024
13 min
There are countless types of plants and animals on Earth, but how do they work? In this episode of Crash Course Biology, we’ll take a bird’s eye view of how multicellular life functions, including ...
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2x42 Episodio 42
Plants Are Hardcore: Plant Anatomy & Physiology
07 de mayo del 2024
13 min
Plants may not seem like they’re doing much, but if you look closer, you’ll find a whole world just lurking beyond the surface. We’re talking chemical defenses, highways, and even ways to change th...
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2x43 Episodio 43
The Poop Episode: How Animals Turn Resources Into Waste
13 de mayo del 2024
12 min
Yep, this is the poop episode. Getting resources and getting rid of waste is so important, we have three whole systems dedicated to it! In this episode, we’ll learn how the respiratory system, dige...
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2x44 Episodio 44
Why You’re More Than Goo: Animal Infrastructure
21 de mayo del 2024
12 min
When you think about the body’s infrastructure, you probably think of bones. But what about the heart, the blood vessels, and the lymphatic system? In this episode of Crash Course Biology, we’ll to...
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2x45 Episodio 45
How Skin, Snot, and Cells Keep Us Healthy: Animal Defense Systems
04 de junio del 2024
12 min
The world is full of microbes and viruses that can get us sick, but we’ve got an Avengers-style defense system ready to take them on. In this episode of Crash Course Biology, we’ll learn about an a...
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2x46 Episodio 46
What REALLY Happens When You Step on a Lego: Nervous & Endocrine Systems
11 de junio del 2024
10 min
If cells and organs never talked to each other, an animal would fall apart faster than a boy band after the popular one goes solo. Thankfully, that’s where the nervous and endocrine systems come in...
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2x47 Episodio 47
How Animals Do It: Sexual & Asexual Reproduction
18 de junio del 2024
12 min
When it comes to animal reproduction, there’s no one-size-fits-all strategy. Some animals need a mate, others don’t, and for some, it depends! In this episode, we’ll learn about sexual and asexual ...
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2x48 Episodio 48
Gender, Sex, & Sexuality: What’s the Difference?
25 de junio del 2024
14 min
We tend to think life fits in two tidy categories: male or female, XX or XY. But it’s so much more diverse and complicated! In this episode of Crash Course Biology, we’ll discover sex and sexuality...
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Estreno:
05 de junio, 2023
Episodios:
48
Última emisión:
30 de abril, 2024
Necesitarás aproximadamente 10 horas para ver toda la temporada.
Sinópsis Temporada:
In 50 episodes, we’re going to explore biology—the science of life. Dr. Samuel Ramsey will guide you through life’s vast interconnectedness, telling lesser-known stories of biologists along the way. We’ll discover how evolution, genetics, ecology, and cell and organismal biology deepen our knowledge of every living thing: including ourselves.
Donde ver esta temporada
Reparto principal
Samuel Ramsey
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