Did Thomas Edison invent the lightbulb? I mean... kind of... but also... no. Every great, world-changing invention is the culmination of efforts by dozens or hundreds of people, spanning decades or centuries.

Squeaks and Mister Brown love cotton candy, so they learn how cotton candy machines turn regular sugar into fluffy, delicious cotton candy!

Squeaks has a big problem! Every year, he grows lettuce in the Fort's greenhouse, but this year it just won't grow. Luckily, Mister Brown knows someone who can help Squeaks and his lettuce: botanist and inventor George Washington Carver!...

Paul Andersen explains how a respirometer can be used to measure the respiration rate in peas, germinating peas and the worm. KOH is used to solidify CO2 produced by a respiring organism.

The big blue buildings of Ikea have sprouted solar panels and wind turbines; inside, shelves are stocked with LED lighting and recycled cotton. Why? Because as Steve Howard puts it: “Sustainability has gone from a nice-to-do to a...

The first pairs of jeans were designed for durability; denim was constructed as a sturdy weave worn by sailors and miners. But over the course of the 20th century, as the demand for jeans has gone up, their durability has gone down....

Folk musician and storyteller David Holt plays the banjo and shares photographs and old wisdom from the Appalachian Mountains. He also demonstrates some unusual instruments like the mouth bow -- and a surprising electric drum kit he...

FLA head Auret van Heerden talks about the next frontier of workers' rights -- globalized industries where no single national body can keep workers safe and protected. How can we keep our global supply chains honest? Van Heerden makes...

In which John Green teaches you about America's "peculiar institution," slavery. I wouldn't really call it peculiar. I'd lean more toward horrifying and depressing institution, but nobody asked me. John will talk about what life was like...

Our knowledge of specific technologies or techniques can sometimes be lost to time. And that can be because of changing economic conditions, or, sometimes, it's because the technology was so deadly that only a few were allowed to know it.

When he realized his wife had to choose between buying family meals and buying her monthly "supplies," Arunachalam Muruganantham vowed to help her solve the problem of the sanitary pad. His research got very very personal -- and led him...

Gardening doesn't need to be a hobby just here on Earth. In fact, it might help life outside of Earth quite a bit to take that pastime to the stars.

In this video, we'll learn about the life story of journalist, orator, teacher, suffragette, and anti-lynching activist Ida B. Wells-Barnett. Ida B. Wells made her name writing and speaking and working to improve the lives of Black...

In which John Green teaches you about globalization, a subject so epic, so, um, global, it requires two videos. In this video, John follows the surprisingly complex path of t-shirt as it criss-crosses the world before coming to rest on...

Did Thomas Edison invent the lightbulb? I mean... kind of... but also... no. Every great, world-changing invention is the culmination of efforts by dozens or hundreds of people, spanning decades or centuries.

You've filled up your cart and made it to the front of the grocery line when you're confronted with yet another choice: what kind of bag should you use? It might seem obvious that plastic is bad for the environment, and that a paper bag...

On November 26, 2020, trade unions in India reported that over 250 MILLION people took part in a strike. What could prompt such massive protest? Farming. Today, we’re going to take a closer look at GMOs, which are organisms whose DNA has...

We've talked about a lot of revolutions in 19th Century Europe, and today we're moving on to a less warlike revolution, the Industrial Revolution. You'll learn about the development of steam power and mechanization, and the labor and...

In which John Green teaches you about globalization, a subject so epic, so, um, global, it requires two videos. In this video, John follows the surprisingly complex path of t-shirt as it criss-crosses the world before coming to rest on...

In the world of chemistry, an "organic" compound is often described as anything with carbon in it, and "organic chemistry" is the study of carbon compounds, but there is actually no single definition of what "organic" means in chemistry,...

Mr. Andersen walks you through the cellular respiration lab.

Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what's its environmental impact? Angel...

New ReviewTravel to Selma, Alabama and the Edmund Pettis Bridge to learn about Bloody Sunday and how the Selma to Montgomery March was a turning point in Civil Rights history

Higgins is done with Spangler's science pranks!