Is it a fuzzy sock? An overripe banana? A moldy tube of toothpaste? In fact, it’s a humble sea cucumber: a brainless, fleshy form surrounding a digestive tract, and bookended by a mouth and an anus. And while it might look odd, its daily...

In which John Green kicks off Crash Course US History! Why, you may ask, are we covering US History, and not more World History, or the history of some other country, or the very specific history of your home region? Well, the reasons...

In a constantly changing world, it's impossible for leaders to provide employees with the assurance they want, says Vimeo CEO Anjali Sud. Her solution: lead with humanity and flexibility. In conversation with veteran journalist Stephanie...

Bond fission, the process of breaking chemical bonds, can occur in two ways: homolytic and heterolytic. In homolytic fission, the bond breaks evenly, with each atom receiving one electron, resulting in the formation of free radicals. In...

This lecture expands on the previous video by exploring the challenges of working with multiple Excel files with different file structures and modifications. We will gain insights into managing these issues effectively in Power...

In which John Green teaches you about Imperialism. In the late 19th century, the great powers of Europe were running around the world obtaining colonial possessions, especially in Africa and Asia. The United States, which as a young...

Discover how you can view prehistoric cave art, from the Altamira and Lascaux replicas in Europe to petroglyphs in North America. Learn about the efforts to preserve these ancient sites and how replicas help share their beauty with the...

MOT 1938: COAST GUARD INVESTIGATION: DRAMATIZATION: Commander Stephen S. Yeandle w/ others in office. Coast Guard sailor being handed Arrest Record cards. 'US Coast Guard Barracks' sign, Investigators Lindsey & Peters talking about...

In which John Green teaches you about some of the colonies that were not in Virginia or Massachussetts. Old New York was once New Amsterdam. Why they changed it, I can say; ENGLISH people just liked it better that way, and when the...

In which John Green teaches you about the beginnings of the American Revolution in a video titled The Seven Years War. Confusing? Maybe. John argues that the Seven Years War, which is often called the French and Indian War in the US,...

In which John Green teaches you about the American Revolution. And the Revolutionary War. I know we've labored the point here, but they weren't the same thing. In any case, John will teach you about the major battles of the war, and...

What about the Native Americans who found themselves stuck in the middle of the Civil War – why did they fight for both sides?

This video provides an overview of antibiotics, explaining how they work to help cure bacterial infections. It discusses the different types of drugs that treat symptoms versus those that work to cure the disease, as well as the...

Meet Venu, a visionary cycle mechanic from Cochin who has revolutionized transportation with his foldable motorbike that fits in a bag. Weighing under 20 kilograms and boasting impressive fuel efficiency, this innovative bike is perfect...

This video explains how to prevent insecure design when developing software.

Here is volume 7 of the planet pe 5 a day gcse pe revision questions. As we move towards the exam in a few weeks time I will be posting 5 questions each day to help test your revision. Place your answers in the comments section and...

Andrew Jackson has a complicated legacy. On the one hand, he was a populist hero and a venerated war general. On the other hand, he enslaved persons, killed thousands of Native Americans, created an economic depression, and killed a man....

Dr. Forrester compares the difficult lives of pioneer families in the 1800s to the lives we live in modern times.

Qué Tan Buena Es La Visión Del Tiburón?

Market Economy defines and identifies characteristics of a market economy and lists examples of how the colonial and early American economy exhibited such characteristics.

My solutions to Free Response Question #2 from the 2016 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam.

This Experimental Design question also works as a part of the AP Physics C:...

MOT 1953: UNION PACIFIC PASSENGER TRAIN: NIGHT: VS Male announcing 'last call...' on speaker microphone (SOT), 'gate no. 2,' female passenger boarding w/ luggage, workers signaling, engineer pulling lever, boy pulls down window shades....

Discover the story behind King Henry VIII's first marriage to Catherine of Aragon, his brother's widow. Learn how their union shaped the political landscape of England and set the stage for Henry's dramatic break from the Catholic...

👉 Learn how to find the slope between two points. The slope of a line is the steepness of the line. The horizontal line has a zero slope while the vertical line has an undefined slope. To determine the slope of a line passing through two...