In this video Paul Andersen explains how a magnetic force arises when magnets or moving electric charges interact with one another. A magnetic dipole will orient towards a magnetic field. When an electric charge is moving it will...

The Ho Chi Minh Trail not only connected North and South Vietnam during a brutal war but also aided Vietnamese soldiers. The trail shaved nearly five months of time off of the trip and was used as a secret weapon of sorts. Cameron...

The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition.

The binomial distribution, introduced as setup to talk about the beta distribution

Today we’re going to talk about two types of cyclones: mid-latitude cyclones and tropical cyclones. Mid-latitude cyclones are huge weather systems that bring day-to-day weather in the mid-latitudes. They're the reason the weather is...

In 1910, 90% of Black Americans lived in the South. By 1940, around 1.5 million Black Americans had left their homes, and 77% lived in the South. By 1970, 52% of Black Americans remained in the South. People moved away for many reasons,...

Have you ever moved? Some animals move too! And if an animal moves from one place to another for weather or food, it's called migration!

Jessi and Squeaks are working on an experiment: Making an ordinary magnet float in the air!



Next Generation Science
Standards:
NGSS Performanc
e Expectations:
3-PS2-3: Ask questions to determine cause and effect...

In which John Green teaches you about the early days of the Civil Rights movement. By way of providing context for this, John also talks a bit about wider America in the 1950s. The 1950s are a deeply nostalgic period for many Americans,...

Disclaimer: This is very different than the usual Crash Course US History episode.



In which John Green lists a whole lot of the battles of the US Civil War in seven and a half minutes. We get a lot of requests for military...

Worldwide, violence is on the decline, but in the crowded cities of the global south — cities like Aleppo, Bamako and Caracas — violence is actually accelerating, fueled by the drug trade, mass unemployment and civil unrest. Security...

From navigating a cross-country road trip (or just finding the nearest coffee shop), to analyzing election results (or the latest meme on K-pop group popularity), maps play a huge role in how we interpret the world! Today, we're going to...

Mr. Andersen describes how plate tectonics shapes our planet. Continental and oceanic platers are contrasted and major plate boundaries are discussed.

Imagine setting sail from Hawaii in a canoe. Your target is a small island thousands of kilometers away in the middle of the Pacific Ocean - a body of water that covers more than 160 million square kilometers. For thousands of years,...

New ReviewMeet the binturong, a mysterious rainforest mammal that is neither bear nor cat yet is called the bearcat. What makes it truly unique is that it smells like buttered popcorn!

New ReviewHarriet Tubman represents the struggle for civil rights in America, advocating for freedom and equality. Born around 1820 in Maryland, she faced significant hardships as the child of enslaved parents. After escaping to the North in 1849,...

New ReviewHarriet Tubman plays a vital role in the Civil War, contributing to the Union Army and the Underground Railroad. She serves as a spy, scout, cook, and nurse, using her knowledge of the South to gather intelligence and assist Union...

Most schoolchildren can find Italy on a map—it’s the “boot” that’s kicking an island into the middle of the Mediterranean Sea. The island is, of course, Sicily, and the boot is Italy’s mainland. Without a doubt, Italy’s complex natural...

Despite an economic turnaround in recent decades, Italy is split into two very different halves. Northern Italy is the country’s economic powerhouse, and the Lombardy region, which produces about 40 percent of Italy’s GDP, is at its...

Italians are warm and personable, and you’re likely to find doing business with them a pleasure. You’ll need to be prepared, though. Their business culture can seem curiously contradictory. In general, the atmosphere is...

Italy is ranked among the top nations in the world for its standard of living. Even so, a constant refrain that’s heard when people talk about Italy is how divided the country is between north and south. For centuries, northern Italy has...

The currency of India is the Indian rupee. Theoretically, one rupee can be broken down into 100 paise, though as of 2019, all coins of denominations under one rupee have been taken out of use. The Reserve Bank of India controls the issue...

Temperatures and climate vary widely throughout India due to the country’s size and its terrain, which ranges from rain forest to desert to mountains. Generally, there are three main seasons: the cool season from October to February; the...

India is officially called the Republic of India and is also known as Hindustan or Bharat. It’s the seventh-largest country in the world. India is often referred to as a peninsula, as it’s mostly surrounded by water bodies on three...