This art history video discussion looks at Bodhisattva, probably Avalokiteshvara (Guanyin), Northern Qi dynasty, c. 550--60, Shanxi Province, China, sandstone with pigments, 13-3/4 feet / 419.1 cm high (Metropolitan Museum of Art, New York).

After World War Two, the applications of basic discoveries in biology took off—and became big business. Today, we’ll look at the rise of Big Pharma and GMO foods. We’ll also discuss how life-science technologies fundamentally changed reproduction: it’s time to invent In Vitro Fertilization and clone a sheep!

In this episode of Crash Course Art History, we’ll hold a mirror to our bodies…in art, anyway. We’ll learn what portraits and self-portraits can tell us about the people they represent and about artists who’ve used bodies to critique their societies.
Chapters:
Introduction: We All Have Bodies
Portraits & Self-Portraits
European Art & the Nude Figure
"Becoming an Image"
"Olympia"
Review & Credits
Credits

Models are great, except they're also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them... even when they're almost completely wrong. Plus, Lewis Structures!

Chapters:
Models
Linus Pauling & The Bonding Model
Lewis Dot Structures
Ionic Bonds
Covalent Bonds
Double Bonds
Triple Bonds

Introduction to Health OER Textbooks

TABLE OF CONTENTS
About this Book
1: Introduction to Health and Wellness
1.1: Dimensions of Wellness
1.2: Healthy People 2020
1.3: Major Health Concerns
1.4: Risk Factors and Levels of Disease Prevention
1.5: Behavior Change and Goal Setting
2: Exercise and Physical Activity
2.1: Health Benefits of Physical Activity
2.2: Physical Activity Guidelines for Adults
2.3: Developing a Personal Exercise Program
3: Nutrition
3.1: Nutrition Basics
3.2: Dietary Guidelines for Americans
3.3: Disease Risk and Nutrition
3.4: Nutrition Facts Label
3.5: Organic Foods
4: Weight Management
4.1: Prevalence of Overweight and Obesity
4.2: Balancing Calories
4.3: Measuring Obesity
4.4: Health Effects of Overweight and Obesity
5: Stress Management
5.1: Stress Overview
5.2: Yerkes-Dodson Law
5.3: The Stress Response
5.4: Health Effects of Stress
5.5: Managing Stress
6: Emotional and Mental Health
6.1: Mental Health Overview
6.2: Psychological Constructs
6.3: Anxiety Disorders
6.4: Depression
6.5: Suicide Prevention
6.6: Eating Disorders
2
7: Alcohol and Tobacco
7.1: Alcohol Facts
7.2: Health Effects of Alcohol Abuse
7.3: Rethinking Drinking
7.4: Tobacco Use
7.5: Quitting Smoking
8: Drugs and Addiction
8.1: Understanding Drug Use and Addiction
8.2: Health Effects of Drug Abuse
8.3: Consequences of Drug Abuse
8.4: Treatment Approaches for Drug Addiction
8.5: Synthetic Drugs
9: Unintentional Injuries and Violence
9.1: Unintentional Injuries
9.2: Intentional Injuries- Violence
9.3: Intimate Partner Violence
10: Relationships, Sexuality, and Contraception
10.1: Healthy Relationships
10.2: Love and Attraction Theory
10.3: Effective Communication
10.4: Sex, Gender, and Sexuality
10.5: LGBT Health
10.6: Contraception
11: Immune System, Infectious Diseases, and STD’s/STI’s
11.1: The Immune System
11.2: STD’s/STI’s
12: Cardiovascular Disease
12.1: The Cardiovascular System
12.2: Cardiovascular Diseases
12.3: Risk Factors for Cardiovascular Disease
13: Cancer
13.1: Cancer Overview
13.2: Types of Cancer
13.3: Risk Factors for Cancer
13.4: Cancer Prevention
14: Environmental Wellness- A Healthy Planet
14.1: The Importance of a Healthy Planet
14.2: The Impact of the Environment on Public Health
14.3: Creating a Healthier Planet

As the 19th century gave way to the 20th, Black Americans were searching for ways to think about how and where they would fit into a post-slavery society. There were several competing schools of thought. Booker T. Washington and W.E.B. Dubois were essential to some of the most prominent ideas in this arena.

Today, Carrie Anne is going to take a look at how those transistors we talked about last episode can be used to perform complex actions. With the just two states, on and off, the flow of electricity can be used to perform a number of logical operations, which are guided by a branch of mathematics called Boolean Algebra. We’re going to focus on three fundamental operations - NOT, AND, and OR - and show how they were created in a series of really useful circuits. And its these simple electrical circuits that lay the groundwork for our much more complex machines.

*CORRECTION* AT the graph says "Quinary System" but then the graph shows 10 possible states - which is actually decimal. Technically, there should be only 5 possible values there, but the overall concept is still the same.

This video segment, adapted from NOVA scienceNOW, presents basic concepts of physics behind booming sand dunes. See how surface tension affects potential and kinetic energy and how it all works together to create sound.

Michael Cantino from Northwest Regional Education Service District presents Creating Accessible Documents in the Microsoft and Google Suites.

This art history video discussion examines Hieronymus Bosch's "Last Judgment Triptych", 1504-08, Akademie fur bildenden Kunste, Vienna, overall dimensions.

The lessons in this issue of Smithsonian in Your Classroom introduce the work of botanists and botanical illustrators, specifically their race to make records of endangered plant species around the world. “Very little of the world’s flora has been fully studied,” says one Smithsonian botanist, “and time is running out.” In the first lesson, students gets to know six endangered plants. They examine illustrations, photographs, and dried specimens of the plants as they consider this question: If a scientist can take a picture of a plant, are there advantages in having an illustration? They go on to consider some of the big questions that botanists themselves must ask: Which of these species are most in need of conservation efforts? Are any of these plants more worth saving than others?In the second lesson, the students try their own hands at botanical illustration, following the methods of a Smithsonian staff illustrator. All that is required for the lesson are pencils, markers, tracing paper, and access to a photocopier.

In The Botany of Desire, Michael Pollan explores risks inherent in one of the most widespread practices in modern agriculture. It's called monoculture, and it refers to cultivation of single or very similar varieties of a food crop on large acreages. In many cases, the variety is one that dominates the marketplace, like the Russet Burbank potato, whose shape makes it a favorite for cutting French fries, or one of the few apple varieties commonly seen in supermarkets. Monoculture may offer economic advantages, but Pollan argues that it brings serious environmental risks.

This art history video discussion examines Francois Boucher's "Madame de Pompadour", oil on canvas, 1750 (extention of canvas and additional painting likely added by Boucher later, Fogg Museum.

This patient education program explains how brain cancer is diagnosed, the different types of tumors, and the available treatment options. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.

In this episode of Crash Course Psychology, Hank takes a look at WAIS and WISC intelligence tests and how bias can really skew both results and the usefulness of those results.

Chapters:
Introduction
WAIS & WISC Tests
Standardized Tests
Reliability & Validity
Twin & Adoption Studies - Genetics of Intelligence
Environmental Influences on Intelligence
Testing Bias
Stereotype Threat
Review & Credits
Credits

Today we're going to take a closer look at brains, how animals use them, and how some animals have even evolved to lose them! It turns out a brain (and intelligence more broadly) isn't easy to define, but what we do know for sure is that brains have evolved over time in response to the challenges in an animals' environment. And what we'll find is that sometimes it's much smarter to have a tiny, simple brain than a big, complicated one!

Nothing changed movies like the arrival of synchronous sound. NOTHING! Acting, directing, cinematography, and presentation all had to be rethought. Some studios were more quick to take on the challenge while others waited until the last moment. Some actors made graceful transitions while others struggled with the new format. But this was the big turning point and a major completion point to what movies would ultimately become.

This patient education program explains the diagnosis of and treatment options for breast cancer. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.

This patient education program explains the diagnosis of and treatment options for breast cancer. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.

Thanks to the wonders of physics, astronomers can map a timeline of the universe’s history. Today, Phil’s going to give you an overview of those first few minutes (yes, MINUTES) of the universe’s life. It started with the Big Bang when the Universe was incredibly dense and hot. It expanded and cooled, going through multiple stages where different kinds of matter could form. It underwent a phenomenally rapid expansion called inflation, which smoothed out much of the lumpiness in the matter. Normal matter formed atoms between 3 and 20 minutes after the bang, and the lumps left over from inflation formed the galaxies and larger structures we see today.

Chapters:
Introduction: The History of the Universe
Giant Particle Colliders
Phase Changes
After the Big Bang: The First Minutes
Recombination
Inflation
Unanswered Questions in Astronomy
Review