About the importance of the National Parks Foundation.

In which John Green teaches you about World War I and how it got started. Crash Course doesn't usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great...

So we have Weather and Climate... but are they the same thing? No, no they are not. But they are both super important to how the geosphere is shaped. In this episode of Crash Course Kids, Sabrina chats with us about the differences...

So, what's the difference between 'weather' and 'severe weather'? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks...

This video is a collaboration with Aatish Bhatia about how to see the COVID-19 tipping point - we present a better way to graph COVID-19 coronavirus cases using a logarithmic scale in "phase space" - plotting the growth rate against the...

At the end of World War II, the nations of Europe were a shambles. Today we'll learn about how the various countries and blocs approached the problem of rebuilding their infrastructure and helping their residents recover. You'll learn...

How much should you get paid for your job? Well, that depends on a lot of factors. Your skill set, the demand for the skills you have, and what other people are getting paid around you all factor in. In a lot of ways, labor markets work...

Left vs Right

David Kwong is a magician and a New York Times crossword puzzle constructor who believes that magic tricks are like puzzles, designed to intrigue and challenge our minds. To him, the essence of wonder lies in experiences that defy...

Global food production - from meat to grains - accounts for a third of all greenhouse gas emissions, says sustainability scientist Jonathan Foley. He presents a portfolio of data-backed solutions to build a better food system world-wide,...

Can strawberries grown inside a building taste sweeter than those grown in a field? Farming entrepreneur Hiroki Koga explores how his team is combining solar-powered vertical farms with AI, robotics and indoor bee colonies to grow...

Africa's smallholder farmers feed millions of people and uplift economies, yet they often lack the basic resources needed to thrive, says agricultural scientist and policymaker Agnes Kalibata. She outlines how to empower these farmers...

Conflict is the biggest barrier to tackling climate change, says youth advocate Victor Ochen. Having seen firsthand how war undermined Uganda's economic and environmental potential, he explains the need to address the shared root causes...

Mastodons and woolly mammoths were both ancient relatives of elephants, but they were very different! Join Jessi and Squeaks to see how we can learn all about what an ancient animal ate, just by looking at its teeth.

In this episode of SciShow Kids, Jessi and Squeaks learn about places with record-breaking rainfall.

In this SciShow Kids compilation, Jessi and Squeaks learn all about dinosaurs—when they lived, how they died, and how we know so much about them.<b<br/>r/>

Ice cream has a unique role in our world’s history, culture, and cravings. The first accounts of cold desserts date back to the first century, in civilizations including ancient Rome, Mughal India, and Tang Dynasty China. Yet the...

There's an invisible health threat right under our feet, says investigative journalist Yvette Cabrera. She digs into the pervasive problem of lead contamination in soil — a particular risk for children in cities — and shares her action...

How will AI improve our lives in the years to come? From its inception six decades ago to its recent exponential growth, futurist Ray Kurzweil highlights AI's transformative impact on various fields and explains his prediction for the...

For AI to achieve its full potential, non-experts need to contribute to its development, says Rumman Chowdhury, CEO and cofounder of Humane Intelligence. She shares how the right-to-repair movement of consumer electronics provides a...

Techno-optimist Vinod Khosla believes in the world-changing power of "foolish ideas." He offers 12 bold predictions for the future of technology — from preventative medicine to car-free cities to planes that get us from New York to...

Bill Ackman has made billions of dollars — and a name for himself — as an activist investor, buying up stock to push for change at companies. In this wide-ranging conversation with author and business ethics professor Alison Taylor,...

In the beginning of the universe, all was darkness — until the first organisms developed sight, which ushered in an explosion of life, learning and progress. AI pioneer Fei-Fei Li says a similar moment is about to happen for computers...

We're programmed to think every issue is binary: "us vs. them." But Daniel Lubetzky, the founder of KIND Snacks, says the real enemy isn't a person but a mindset. He introduces a new initiative that aims to bring together "builders" from...