When we think of world religions, we often think of the Big Five: Judaism, Christianity, Islam, Hinduism, and Buddhism. But why do we think of those? In this episode of Crash Course Religions, we’ll learn why “world religions” is a...

Atheism is far from new, but the various ways that people say “no thank you” to belief in gods, deities, or particular religions are so diverse that they’ve had a huge impact on world belief systems. In this episode of Crash Course...

We might agree religious freedom is a good thing—but can we agree on what it really means? This episode of Crash Course Religions explores ongoing debates over where the limits of religious freedom lie. We’ll discover why this ideal...

What’s the line between inspiration and flat-out appropriation? In this episode of Crash Course Art History, we grapple with questions about artistic originality and authenticity that have plagued the art world for hundreds of years....

Welcome back to the Fluctus Channel, where we're taking a closer look at the US Air Force's advanced techniques for ground targets hit with extreme accuracy. Today, we'll explore the technology and training that make this...

Welcome back to the Fluctus Channel. Today, we look at a massive cave system in Norway, where the US Marine Corps has thousands of vehicles ready for war.



Fluctus is a website and YouTube channel dedicated to sea...

Welcome back to the Fluctus Channel for a feature on the A-10’s history, the technology that has made it still viable today, and the future of close air support missions.



Fluctus is a website and YouTube channel...

The scale of the universe is bigger than you can imagine. It is also smaller than you can imagine. The smallest lenth theorized to be possible, the Planck length is about 4 X 10^-35 meters. Just imagine...

Welcome back to the FLUCTUS channel for a discussion about how the U.S. military responds to plane crashes and what happens to planes after they’re no longer flyable.



Fluctus is a website and YouTube channel...

In the beginning, for hundreds of thousands of years, we didn't go to school. During the hunter gatherer days, when humans just gathered wild plants or chased wild animals, that's pretty much the main thing we did, and we learned it at a...

Nuclear power may not be as bad as you think. If we used Thorium instead of Uranium, we could greatly decrease dangerous radioactive by-products. There is enough Thorium in the world to meet all our energy needs...

Medicare for all explained. Medicare for all cost? Single payer. Medical costs in the United States are the highest in the world. Yet, not everyone in the United States is participating. We have 27 million...

Biological Immortality: The top 3 biggest causes of death are in order: Heart disease, Cancer, and Lung disease. These and other diseases kill as many as 2.5 million people per year...

German mathematician Daniel Regenberg contacted me to share his data on how many people are likely to get infected. I was very skeptical and did not believe it. But when I checked his numbers against...

Science Kids Hurricanes, Tornadoes, Bomb Cyclones, Atmospheric Rivers, Floods and Extreme Weather

The video provides an overview of tornadoes, describing them as fast-spinning columns of air that can cause immense destruction. It...

Preschool Prep Alphabet and Countries from A-Z V1-0022

In this video, viewers are introduced to the United States of America (USA) and its flag, featuring red and white stripes along with 50 stars on a blue background symbolizing...

What is tribal sovereignty? In this episode of Crash Course Native American History, we’ll explore how tribes can and can’t govern themselves, and why sovereignty isn’t something the U.S. ever gave to tribes — it’s an inherent right they...

Native American history didn’t begin in 1492, and it didn’t end in 1900. It stretches back thousands and thousands of years and extends into the present – and the future – of the United States. In our first episode of Crash Course...

As tariffs have been pushing prices higher, I embarked on a mission to avoid them altogether. But is it even possible to tariff-proof my life by buying only products made in the U.S.A.? Here's what I found.

Welcome back to the Fluctus Channel, as we discover how the Dutch, U.S., and Swedish Marines train together in joint amphibious operations.



Fluctus is a website and YouTube channel dedicated to sea geeks. Whenever...

The vital links between a healthy society and a sustainable environment.

Explores the social, economic, and scientific ramifications of our air quality goals and practices.

Examines the future of a variety of alternative sources of fuel.

Explores scientific innovations, supportive community action and community planning, and effective political reform behind the advances in green building practices.