ClassHook | Biology

Home / Playlists / Biology

Biology

public visibility icon

Public • 143 clips

This playlist provides clips that convey key concepts in Biology.

Breakthrough (2015): Restoring Ecosystems

2m 47s

restoring ecosystems

Sandra Postel works tirelessly to help the Colorado River once again fulfill its destiny of reaching the sea.

Clips

1

Eukaryotic Transportation and Building thumbnail

Crash Course: Biology: Eukaryotic Transportation and Building

Hank provides an overview of the function of the Endoplasmic Reticulum (ER), Ribosomes, Golgi App...

2

Coolest Part of the Cell thumbnail

CrashCourse: Coolest Part of the Cell

Hank explains the function of mitochondria and what makes it so cool. He also explains how scient...

3

Membranes & Transport thumbnail

Crash Course: Biology: Membranes & Transport

Hank explains active and vesicular transport then covers how cells regulate their contents and pr...

4

Eukaryotic Nucleus thumbnail

CrashCourse: Eukaryotic Nucleus

Hank explains the role of the nucleus in a eukaryotic cell. He backs up his explanation with comp...

5

George vs. The Geriatric Bike Gang thumbnail

Seinfeld: George vs. The Geriatric Bike Gang

George pretends to be handicapped, and while riding his bike, he hits a senior man's bike. When c...

6

Animal Development thumbnail

06:54

Crash Course: Biology: Animal Development

Hank explains the way in which organisms grow and develop. He covers how to determine the complex...

7

The Senses Song thumbnail

01:54

Animaniacs: The Senses Song

The Warners explain the five main human senses (Sight, Touch, Taste, Smell, and Hearing) and acco...

8

Cookie Withdrawal thumbnail

01:23

Rugrats: Cookie Withdrawal

Angelica is having withdrawal symptoms from not having cookies. She shows her desperation to the ...

9

Marge Gets Stressed Out thumbnail

03:58

The Simpsons: Marge Gets Stressed Out

Marge is put under a lot of stress with all of her responsibilities, which include solving the pr...

10

Four-Year-Old Teaches Biology thumbnail

02:19

The Ellen DeGeneres Show: Four-Year-Old Teaches Biology

Four-year-old Brielle shares with us some facts about the human body. She covers facts about the ...

11

Beautiful Butterfly thumbnail

00:44

A Bug's Life: Beautiful Butterfly

Heimlich hatches from his chrysalis and turns into a "beautiful" butterfly. This clip illustrates...

12

Big Bad Pickanosis thumbnail

01:35

Osmosis Jones: Big Bad Pickanosis

Thrax holds an evil meeting in which he highlights his successes as a viruses. He illustrates tha...

13

Structure's The Thing thumbnail

02:03

The Magic School Bus: Structure's The Thing

Ralphie and the rest of the class attempt to learn about the structure of the body in order to bu...

14

Ralphie's Cell Battle thumbnail

02:54

The Magic School Bus: Ralphie's Cell Battle

Ralphie's class enters his body to find out what is making him sick. His classmates find bacteria...

15

Them Not-So-Dry Bones thumbnail

03:02

Schoolhouse Rock!: Them Not-So-Dry Bones

This clip illustrates the skeletal system and describes its purpose: to protect the body and give...

16

Cold-Blooded Reptiles thumbnail

01:54

Bill Nye, the Science Guy: Cold-Blooded Reptiles

Bill Nye introduces reptiles and explains how they are able to live in different environments aro...

17

Sheldon Explains Homeostasis thumbnail

01:09

The Big Bang Theory: Sheldon Explains Homeostasis

Sheldon explains the concept of homeostasis to Penny and tries to convince Penny to stay in her r...

18

Butterfly Surprise thumbnail

02:40

Caillou: Butterfly Surprise

Caillou and his class visit the butterfly conservatory. There, they learn about the different sta...

19

Caillou Teaches Rosie About Bugs thumbnail

02:52

Caillou: Caillou Teaches Rosie About Bugs

Caillou introduces Rosie to ants and explains that they're harmless. He then shows Rosie a caterp...

20

Do the Circulation thumbnail

03:02

Schoolhouse Rock!: Do the Circulation

This catchy song introduces the viewer to the circulatory system and explains its basic function:...

21

Four-Year-Old Teaches Anatomy thumbnail

02:39

The Ellen DeGeneres Show: Four-Year-Old Teaches Anatomy

Four-year-old Brielle teaches Ellen and the audience about the skeletal system. She identifies se...

22

Joints thumbnail

02:08

Bill Nye, the Science Guy: Joints

Bill Nye describes the different types of joints in the body and illustrates how they contribute ...

23

Goodnight Cocoon thumbnail

00:51

Maggie Simpson in The Longest Daycare: Goodnight Cocoon

Maggie finds a caterpillar crawling on the floor and starts playing with it. She carries it away ...

24

You're Still a Seed thumbnail

01:12

A Bug's Life: You're Still a Seed

Dot believes that she should be able to fly since she's a Royal Ant. Flik illustrates biological ...

25

Welcome to Anatomy Park thumbnail

00:59

Rick and Morty: Welcome to Anatomy Park

Rick sends Morty to Anatomy Park so that he can find Doctor Bloom and help save Reuben's life fro...

26

Alveoli Forest thumbnail

01:20

Rick and Morty: Alveoli Forest

The group escapes from hepatitis B and enters Alveoli Forest, where they encounter the bronchial ...

27

The Body Machine thumbnail

03:03

Schoolhouse Rock!: The Body Machine

This clip explains the purpose of food: fuel for the body. It illustrates the digestive system an...

28

What Happens to a Stagnant Cell? thumbnail

02:55

Here Comes the Boom: What Happens to a Stagnant Cell?

Mr. Voss explains what a stagnant cell is by using teamwork as an analogy.

29

Kramer's Body Clock thumbnail

02:11

Seinfeld: Kramer's Body Clock

Kramer explains how he doesn't trust alarm clocks and instead relies on his mental alarm, or body...

30

The Missing Link: Muscles thumbnail

02:23

The Magic School Bus: The Missing Link: Muscles

Ralphie's robot will not move, and the class learns that it doesn't move because it lacks muscles...

31

How a Plant Makes Food thumbnail

03:54

The Magic School Bus: How a Plant Makes Food

By observing the chloroplasts in a leaf, the students learn that plants produce their own food an...

32

How Water Changes thumbnail

04:05

The Magic School Bus: How Water Changes

The class goes to Water Land and learns about how water changes when it is exposed to different a...

33

Mr. Burns Political Advert thumbnail

02:04

The Simpsons: Mr. Burns Political Advert

Mr. Burns makes a political campaign to rally the support of his peers. While doing so, he introd...

34

Bart Catches a Three-Eyed Fish thumbnail

01:11

The Simpsons: Bart Catches a Three-Eyed Fish

Dave Shutton, an investigative reporter, approaches Bart and Lisa as they're fishing and talks to...

35

Human See, Human Do thumbnail

02:10

Planet of the Apes: Human See, Human Do

Bright Eyes keeps trying to form words and is very responsive to human stimuli. The apes possess ...

36

Small Intestine thumbnail

01:10

Rick and Morty: Small Intestine

The group takes a boat ride through the small intestine, where the workers are not only singing a...

37

It's Called Motor Neuron Disease thumbnail

02:40

The Theory of Everything: It's Called Motor Neuron Disease

The doctor explains to Stephen Hawking that Motor Neuron Disease is affecting his ability to use ...

38

Plant Growth thumbnail

04:12

Sid the Science Kid: Plant Growth

Teacher Suzy explains to her students an experiment with plants to help them understand how plant...

39

Sid's Amazing Lungs thumbnail

03:54

Sid the Science Kid: Sid's Amazing Lungs

Teacher Suzy explains to her students how lungs work then investigates the different ways in whic...

40

Muscles Muscles Song thumbnail

01:33

Sid the Science Kid: Muscles Muscles Song

Teacher Suzy sings about muscles. The song mentions that muscles are everywhere throughout our bo...

41

Telegraph Line thumbnail

03:02

Schoolhouse Rock!: Telegraph Line

This clip introduces the nervous system and illustrates its different parts. It also explains the...

42

Homer's Evolution thumbnail

01:10

The Simpsons: Homer's Evolution

Homer evolves from a single-celled organism into a modern-day human. A great depiction of evolution.

43

Eukaryopolis - Animal Cells thumbnail

03:34

Crash Course: Biology: Eukaryopolis - Animal Cells

Hank explains the inner workings of a eukaryotic cell and the role of several organelles. He comp...

44

In Da Club: Membranes and Transplant thumbnail

04:43

CrashCourse: In Da Club: Membranes and Transplant

Hank explains diffusion and demonstrates the diffusion process by placing dyed salt water (in a s...

45

Heredity thumbnail

03:53

Crash Course: Biology: Heredity

Hank explains that heredity is the passing on of genetic traits from parents to offspring. He mak...

46

DNA Structure thumbnail

04:40

Crash Course: Biology: DNA Structure

Hank explains that DNA stores our genetic instructions and illustrates how DNA is structured. He ...

47

Mitosis Splitting Up thumbnail

01:44

CrashCourse: Mitosis Splitting Up

Mitosis is a key function in your body that constantly remediates cuts, repairs cells and accomod...

48

Meiosis: Where Sex Starts thumbnail

02:35

CrashCourse: Meiosis: Where Sex Starts

Hank introduces meiosis, a special type of cell division that is necessary for sexual reproductio...

49

Evolutionary Development thumbnail

05:31

CrashCourse: Evolutionary Development

Hank explains that animals are more similar to us than we imagined. He compares the ways in which...

50

Mitosis Prophase and Metaphase thumbnail

02:42

Crash Course: Biology: Mitosis Prophase and Metaphase

Hank explains the first two phases of mitosis: Prophase and Metaphase.

51

Mitosis Anaphase and Telophase thumbnail

01:35

CrashCourse: Mitosis Anaphase and Telophase

Hank explains the last two phases of mitosis - Anaphase and Telophase.

52

Phenotype thumbnail

02:58

Crash Course: Biology: Phenotype

Hank explains how one's genotype affects his/her phenotype then gives an example of male pattern ...

53

A De-gene-erate thumbnail

02:04

Gattaca: A De-gene-erate

Eugene uses his own DNA samples to help Vincent pass as a "valid," or someone with a superior gen...

54

Photosynthesis thumbnail

07:36

Crash Course: Biology: Photosynthesis

Hank explains in-depth the series of reactions that take place for a plant to produce food for it...

55

The Calvin Cycle thumbnail

04:24

Crash Course: Biology: The Calvin Cycle

Hank explains the Calvin Cycle, the light-independent reactions that occur within a plant to turn...

56

Meiosis I: The Four Phases thumbnail

04:18

Crash Course: Biology: Meiosis I: The Four Phases

Hank explains the four phases of meiosis 1: prophase 1, metaphase 1, anaphase 1, and telophase 1....

57

Meiosis II thumbnail

02:14

Crash Course: Biology: Meiosis II

Hank explains that the process of meiosis 2 is exactly the same as mitosis, though the goal is di...

58

Charles Darwin and Natural Selection thumbnail

04:20

CrashCourse: Charles Darwin and Natural Selection

Hank provides background information on the biologist who contributed to evolutionary history: Ch...

59

Speciation: Of Ligers and Men thumbnail

05:09

Crash Course: Biology: Speciation: Of Ligers and Men

Hank explains what defines a species: the ability to create fertile offspring. He also explains t...

60

Types of Selection thumbnail

04:40

Crash Course: Biology: Types of Selection

Hank lists the different types of natural selection and explains each of them. He accompanies eac...

61

Dominant and Recessive Genes thumbnail

02:02

Crash Course: Biology: Dominant and Recessive Genes

Hank explains how dominant and recessive traits work using an example of wet and dry ear wax.

62

Differences of RNA thumbnail

00:32

Crash Course: Biology: Differences of RNA

Hank points out the three major differences between DNA and RNA. He mentions that RNA plays a cru...

63

DNA Transcription thumbnail

05:44

Crash Course: Biology: DNA Transcription

Hank explains how DNA and three specialized versions of RNA synthesize proteins. He delves into t...

64

DNA Translation thumbnail

03:19

CrashCourse: DNA Translation

Hank explains the process of DNA translation, which decodes the genetic instructions to create pr...

65

03:20

Crash Course: Biology: ATP

Hank explains how Adenosine Triphosphate (ATP) is used in the body. He describes ATP as the curre...

66

Glycolysis thumbnail

03:17

CrashCourse: Glycolysis

Hank walks through the first stage of cellular respiration, Glycolysis, which is the breaking dow...

67

The Krebs Cycle thumbnail

03:51

Crash Course: Biology: The Krebs Cycle

Hank explains another stage of cellular respiration, The Krebs Cycle (also known as the Citric Ac...

68

Electron Transport Chain thumbnail

01:53

CrashCourse: Electron Transport Chain

Hank explains the Electron Transport Chain stage of cellular respiration. He notes that this stag...

69

Plant Cells vs. Animal Cells thumbnail

06:10

Crash Course: Biology: Plant Cells vs. Animal Cells

Hank illustrates the differences between plant and animal cells. Both are eukaryotic cells, but t...

70

Jesus Fish thumbnail

00:26

The Simpsons: Jesus Fish

Flanders explains to Lisa how he created the Jesus fish: through natural selection.

71

First Wolf-Out thumbnail

02:39

Teen Wolf: First Wolf-Out

Scott goes through his first transformation into a werewolf in the bathroom. Little did he know, ...

72

Sugar Shock thumbnail

03:20

Inside Eddie Johnson: Sugar Shock

Eddie Johnson has consumed a lot of sugar, and The Pancreas Supervisor explains how he handles th...

73

Sugar Rush thumbnail

03:16

Inside Eddie Johnson: Sugar Rush

Eddie Johnson is in study hall, and he is hungry. The Digestion Supervisor inside his stomach des...

74

Stealthy Hank thumbnail

02:48

Finding Dory: Stealthy Hank

Hank the octopus uses numerous defense mechanisms to hide, sneak around, and protect both himself...

75

Mr. DNA thumbnail

03:05

Jurassic Park: Mr. DNA

Hammond shows the crew a video that explains how Jurassic Park scientists acquired dinosaur DNA a...

76

Sound Localization thumbnail

02:54

Sneakers: Sound Localization

A security professional is tasked with determining the location of an event. Through deductive re...

77

Animal Facts thumbnail

01:51

The Wild Thornberrys: Animal Facts

Eliza and Darwin go on several adventures to learn interesting facts about different creatures of...

78

It's What Plants Crave thumbnail

02:41

Idiocracy: It's What Plants Crave

The most average man in the world is preserved. When he awakens, he is the smartest man in the wo...

79

Anglerfish Chase thumbnail

03:37

Finding Nemo: Anglerfish Chase

Dory drops the scubadiving goggles that she and Marlin found, and they swim to the abyss to find ...

80

Zero Chemistry thumbnail

02:06

Thomas Edison's Secret Lab: Zero Chemistry

Von Bolt learns about the pheromones and tries to use them to get the attention of a new lady rob...

81

Cloning a Rabbit thumbnail

01:36

The Boys from Brazil: Cloning a Rabbit

Dr. Bruckner demonstrates cloning by injecting the blood cells of a black rabbit into a white rab...

82

Louis Pasteur thumbnail

02:26

Animated Hero Classics: Louis Pasteur

Louis Pasteur is remembered for his remarkable breakthroughs in the causes and preventions of dis...

83

Too Much Yeast! thumbnail

02:48

I Love Lucy: Too Much Yeast!

Lucy and Ethel bake bread but put too much yeast. This clip can be used as an introduction to tea...

84

A Viable Vaccine thumbnail

01:24

Contagion: A Viable Vaccine

The CDC attempts to find a solution for a worldwide epidemic. However, it is easier said than don...

85

Modeling of a Virus thumbnail

01:04

Contagion: Modeling of a Virus

The team creates a model of the virus causing an epidemic to better understand how it behaves and...

86

Everything That Eats Is Connected thumbnail

01:58

Bill Nye, the Science Guy: Everything That Eats Is Connected

Bill Nye explains the food web and how every living thing, even a human, is connected in it. He i...

87

The Defective Simpsons Gene thumbnail

02:21

The Simpsons: The Defective Simpsons Gene

Homer brings together relatives from the tri-state area in an attempt to prove to Lisa that there...

88

Sneezing and Tears thumbnail

02:10

Beakman's World: Sneezing and Tears

Beakmans explains that onions make you cry because of the chemical that gets into your nose. He t...

89

Vaccines and The Immune System thumbnail

07:04

Beakman's World: Vaccines and The Immune System

Beakman explains what a vaccine is by acting like Edward Jenner. He explains how Jenner created t...

90

Ant Anatomy thumbnail

06:01

Beakman's World: Ant Anatomy

Beakman explains how ants find food using a video clip. He then shows a model of an ant and goes ...

91

Spot Your Flower thumbnail

01:44

Adaptation: Spot Your Flower

Laroche and Orlean are at a flower show looking at different flowers. Laroche spots an orchid and...

92

Cell Restaurant thumbnail

04:32

Beakman's World: Cell Restaurant

Beakman answers quick questions about blood, veins, and their functions. They demonstrate this by...

93

Adaptations thumbnail

03:02

Science with Sophie: Adaptations

Sophie discusses how plants and animals need to compete in order to survive and the role that ada...

94

Classification of Fats thumbnail

02:44

Crash Course: Biology: Classification of Fats

Hank explains the different types of fat (saturated, unsaturated, omega-3, trans) that exist and ...

95

You Are What You Eat: Biological Molecules thumbnail

03:19

Crash Course: Biology: You Are What You Eat: Biological Molecules

Hank explains that biological molecules are essential sources of energy. They are used for energy...

96

How the Lungs Work thumbnail

04:21

Beakman's World: How the Lungs Work

Beakman explains why we breathe and then uses an anatomical model to show which parts of the lung...

97

The Heart thumbnail

04:27

Beakman's World: The Heart

Beakman explains what the heart is and how it works using a model and an animated clip. He shows ...

98

What is Urine? thumbnail

04:14

Beakman's World: What is Urine?

Beakman uses a model to explain how cells release waste and the kidneys need to filter it. He the...

99

Finding a Cancer Killer thumbnail

03:21

Breakthrough: Finding a Cancer Killer

Dr. June and his team are developing a theory that will kill a cancer cell.

100

Protein Power Up thumbnail

03:53

Fizzy's Lunch Lab: Protein Power Up

The Lunch Labbers can’t keep up with Corporal Cup’s exercise regimen. Their muscles are tired. Fi...

101

Population Genetics thumbnail

03:05

CrashCourse: Population Genetics

Hank describes the five factors that explain changes in allele frequency, which are at the heart ...

102

Genetics Overview thumbnail

03:13

National Geographic: Genetics Overview

What is a genome, and how are traits passed from generation to generation? Learn how pea plants h...

103

Dog Diversity thumbnail

02:10

Science with Sophie: Dog Diversity

Sophie tackles the question of why there are so many different breeds of dogs. She briefly discus...

104

Natural Selection thumbnail

07:01

Beakman's World: Natural Selection

Beakman explains that giraffes have long necks so they can eat leaves out of trees. He mentions t...

105

The Eyeball thumbnail

02:13

Bill Nye, the Science Guy: The Eyeball

Bill Nye explains some parts of the eye and explains how the eye works with the brain. Your eye c...

106

The Ear thumbnail

01:27

Bill Nye, the Science Guy: The Ear

Bill Nye explains the flow of vibrations through the ear. Humans perceive sound after vibrations ...

107

The Bone Dance thumbnail

02:02

Hannah Montana: The Bone Dance

Miley Stewart memorizes the names of the bones in the human body by putting them into a song. She...

108

Prefrontal Cortex thumbnail

01:06

The Big Bang Theory: Prefrontal Cortex

Amy briefly explains the roles of the prefrontal cortex, the limbic system, and the amygdala in t...

109

How the Nose Works thumbnail

05:39

Beakman's World: How the Nose Works

He uses a cartoon clip to explain the anatomy of the nasal cavity and where mucus is produced. He...

110

Why do Feet Smell? thumbnail

07:28

Beakman's World: Why do Feet Smell?

Beakman explains that shoes stink because of the bacteria on your feet. He uses a microscope to q...

111

Explaining Pimples thumbnail

07:20

Beakman's World: Explaining Pimples

Beakman explains what pimples are by using an animated clip. He explains normal function of your ...

112

Creating Music thumbnail

04:16

Beakman's World: Creating Music

Beakman explains what sound waves and vibration are and explains how these create music. He then ...

113

Hair Growth thumbnail

04:05

Beakman's World: Hair Growth

Beakman explains how hair grows starting with the hair follicle, why hair falls out and why diffe...

114

The Brain thumbnail

03:59

National Geographic: The Brain

The brain constitutes only about 2 percent of the human body, yet it is responsible for all of th...

115

The Heart thumbnail

02:42

National Geographic: The Heart

The human heart beats up to 3 billion times over an average lifespan. Learn about the anatomy of ...

116

How The Eye Makes Sense of The World thumbnail

04:07

National Geographic: How The Eye Makes Sense of The World

How does the eye work exactly? In the latest video from Decoder, learn some of the extraordinary ...

117

All About Nutrients thumbnail

05:03

Crash Course: Anatomy & Physiology: All About Nutrients

Hank explains the different types of nutrients that our body needs: water, vitamins, minerals, ca...

118

Taste Buds thumbnail

01:15

Science with Sophie: Taste Buds

Sophie explains the purpose of taste buds and how they've helped humans survive. She also briefly...

119

Earwax Explained thumbnail

04:10

Beakman's World: Earwax Explained

Beakman explains earwax and its purpose using a giant ear with wax in it and an animated clip. He...

120

Allergies thumbnail

05:03

Beakman's World: Allergies

Beakman explains what allergies and allergens are. He talks about how the immune system causes th...

121

Beakman Explains Sweat thumbnail

04:36

Beakman's World: Beakman Explains Sweat

Beakman uses an animated clip to explain how perspiration keeps us cool in the same way that a ca...

122

Nerve Responsibility thumbnail

03:10

Beakman's World: Nerve Responsibility

Beakman explains that nerves are responsible for our five senses. He uses an animated clip to exp...

123

Optical Illusions thumbnail

04:55

Beakman's World: Optical Illusions

Beakman explains how vision works involving the brain and eyes. He then explains how this works t...

124

Building up Gas thumbnail

04:50

Beakman's World: Building up Gas

Beakman explains flatulence and why our bodies build up gas that needs to be expelled. He explain...

125

Why Do We Cry? thumbnail

02:59

Science with Sophie: Why Do We Cry?

Sophie explains the purpose of tears and discusses the different types of tears that we produce. ...

126

The Role of Snot thumbnail

01:04

Science with Sophie: The Role of Snot

Sophie conducts an experiment in which she creates a snot-like substance. She then explains the p...

127

What Are Scabs? thumbnail

01:40

Science with Sophie: What Are Scabs?

Sophie explains how scabs form and how wounds are healed. She uses an analogy involving beavers b...

128

All About Fear thumbnail

02:06

Science with Sophie: All About Fear

Sophie discusses fear and explains its purpose: to keep us alive. She illustrates what happens to...

129

Evolution Argument thumbnail

05:23

Friends: Evolution Argument

When Phoebe states that she doesn't believe in evolution, Ross tries to convince her that it is a...

130

You've Killed God, Sir thumbnail

00:56

Creation: You've Killed God, Sir

Charles Darwin struggles with the meaning of his research, and Thomas Huxley tells him that his t...

131

Visualizing Antibiotic Resistance thumbnail

02:06

60 Minutes: Visualizing Antibiotic Resistance

To illustrate why excessive use of antibiotics is a problem, a scientist performs an experiment. ...

132

The Neanderthals thumbnail

03:59

National Geographic: The Neanderthals

This clip explains the known history of the Neanderthals, who were the closest relatives to the m...

133

Taking Flight thumbnail

01:27

Fly Away Home: Taking Flight

Amy and her father prepare to guide the geese south for the winter. They plan out the journey and...

134

The Circle Of Life thumbnail

03:59

The Lion King: The Circle Of Life

All the animals in the animal kingdom rush to see the new prince of the animal kingdom, a lion cu...

135

Save the Ocean thumbnail

03:04

Schoolhouse Rock!: Save the Ocean

This clip promotes the protection and preservation of marine ecosystems. It explains how global w...

136

It's What Earth Day Is All About thumbnail

01:32

The Magic School Bus: It's What Earth Day Is All About

Tim mentions to Inspector 47 that all of the plants, animals, bugs, and insects in the rainforest...

137

Restoring Ecosystems thumbnail

02:47

Breakthrough (2015): Restoring Ecosystems

Sandra Postel works tirelessly to help the Colorado River once again fulfill its destiny of reach...

138

Light Pollution thumbnail

03:00

National Geographic: Light Pollution

Ever since the light bulb's invention 150 years ago, artificial light has illuminated homes, stre...

139

What are Rainforests? thumbnail

03:18

National Geographic: What are Rainforests?

This clip provides an overview of rainforests. It describes their age, unique characteristics, im...

140

Plastic Ocean thumbnail

01:50

A Plastic Ocean: Plastic Ocean

This clip describes the disastrous impact that our use of plastic has on the environment. It desc...

141

That's Why Carbon is a Tramp thumbnail

02:19

CrashCourse: That's Why Carbon is a Tramp

Hank explains the properties of Carbon and its flexible bonding criteria, which allows it to bond...

142

Slow Sloths thumbnail

02:00

Wild Kratts: Slow Sloths

Chris transforms into a sloth to understand how it can hang for so long. The group's impression o...

143

Fish Out of Water thumbnail

01:17

The Grim Adventures of Billy & Mandy: Fish Out of Water

Billy's tiny, unhealthy, pet fish is made giant-sized by Grim as Billy was sleeping. Too big for ...