Crash Course
Immune System (Part 2)
Scientists are creating an experimental vaccine for the Ebola virus, which in clinical trials, is working. Such vaccines are the topic of a video about the adaptive immune system. The narrator discusses how a body reacts to...
Crash Course
Lymphatic System
Learn about the lymphatic system and its role in maintaining homeostasis in the 44th video in a series of 47. The narrator shows learners the anatomy of the lymphatic system and its role in supporting the cardiovascular system. He then...
Crash Course
Respiratory System (Part 1)
Explore the evolution of the respiratory system with a video that shows the anatomy of the system, how each part plays a role in inhalation and exhalation, and then moves into how the system works in the human body.
Crash Course
Blood – True Blood (Part 1)
Teach your class about human blood and explain why donation is so important using the 29th video in a series of 47. Learners explore the basic components of blood, how cuts stop bleeding, and how antigens determine blood types.
Crash Course
The Heart – Heart Throbs (Part 2)
The heart has its own electrical supply, and even if separated from a body, will continue to beat. Classes learn about the electricity of the human heart in video 26 of a series of 47. Specifically, they explore pacemaker cells, SA nod,...
Crash Course
Muscles – Muscle Cells (Part 1)
As part of a study of muscles and muscle cells the narrator of this insightful video begins by reviewing the three types of muscle — smooth, cardiac, and skeletal. He then explains how actin and myosin play important roles in those...
Crash Course
Peripheral Nervous System
The brain does not feel pain, which is why surgeons can perform brain surgery without anesthesia or while the patient is awake. Pupils see how the peripheral nervous system allows humans to feel pain. The narrator explores the afferent...
Crash Course
The Nervous System – Action! Potential! (Part 2)
There are about 100,000 chemical reactions happening in your brain every second to help you sense and respond to the world around you. After a brief review of electricity, the narrator explores the action potential neurons used to sense...
Crash Course
The Integumentary System – Skin Deeper (Part 2)
The thinnest skin on your body is found on your eyelids, and the thickest is found on the soles of your feet. This seventh video in a series of 47 explores how the integumentary system protects people and also helps them interact with...
Crash Course
Introduction to Anatomy and Physiology
The average human body loses 40–100 strands of hair in one day. This is the first video in a series of 47 and introduces scholars to anatomy and physiology, the study of the human body, and how it works. The narrator shares the history...
SciShow
8 Creepy Animals That Are Actually Harmless
Did you know there's a lizard that shoots blood out of its eyes? This video explores animals whose appearance or behavior is frightening. Despite this, scholars see these characteristics are actually essentially harmless adaptations that...
SciShow
Why Do I Feel Lightheaded When I Stand Up?
Hypotension can be caused by a number of things — pregnancy, after eating a full meal of carbs, medications, and even genetics. In the video, the narrator discusses why some people become dizzy or light-headed when they stand up quickly....
SciShow
Epigenetics
Epigenetics shows that basically you are what your parents eat. This video explores epigenetics or the factors that determine which genes are expressed in your body. From behavior to environments to dietary choices, some genes change in...
SciShow
Invasive Species: The Story of Bunny
Lionfish, a species of fish introduced into the Atlantic, have been so successful that to keep their population normal, two percent of their population would need to be killed every month! The narrator explains how invasive species can...
SciShow
Glowing Rats and Extreme Genetic Engineering
An example of extreme genetic engineering is modified salmon, which are genetically altered to grow twice their size and swim twice as fast — and they're probably in grocery stores already! The video explores synthetic biology or the...
SciShow
How to Live Forever? Be a Jellyfish
The turritopsis dohrnii, or immortal jellyfish, are tiny, with adults measuring only 0.18 inches tall and wide. The narrator of this short video explores the immortal jellyfish and the importance of their unique and amazing lives. These...
Be Smart
Should You Be Worried About Zika?
In 2007, 73 percent of the population in Polynesia was infected with the Zika virus, and, like today, there was no vaccine. Viewers see the history of Malaria, dating back to Roman times and its relationship to the Zika virus....
Be Smart
How Do Bees Make Honey?
A queen bee may lay between 600-1,500 eggs per day during her three to four year reign. This fact and many others are contained in a video that shows scholars how bees turn nectar from flowers into honey, traveling thousands of miles to...
Be Smart
Is Inheritance Really All In Our Genes?
Introduce young scholars to epigenetics, the study of the changes in organisms. Viewers learn about investigators at McGill University in Montreal, Quebec, Canada who have shown that a father's diet can influence the health and...
Be Smart
Why Are You Multicellular?
In one gallon of seawater from Puerto Rico's bioluminescent bay, you can find 720,000 glowing algae, a very interesting multicellular organism. Viewers learn about the evolutionary advantages of being multicellular, instead of...
Be Smart
Inside the World of Fire Ants!
Did you know that fire ant colonies are seen as small mounds on the surface of Earth but underground, tunnels can extend as far as 25 feet away? Viewers learn about the unique history of fire ants, from the pain of their sting to their...
Bozeman Science
Elements of a Feedback Loop
Even clothing styles are part of a feedback loop. Learners explore four different examples of feedback loops both outside of and within the body: speed limit signs, thermostats, thermoregulation, and blood glucose levels. They...
Bozeman Science
Ecological Selection
Humans, through artificial selection, created a dog that is hypoallergenic, loves water, is good with kids, very smart, and comes in a variety of colors — a labradoodle. Through the analysis of dog breeds, class members explore...
Bozeman Science
The Origin of Life - Scientific Evidence
Guess where the oldest rocks on Earth are found? And what do these rocks reveal about the age of the earth? Viewers of this short video analyze the age of the earth and explore the origin of life through geologic,...