Fresh water is essential for life -- and there's not nearly enough of it for the world right now. Why is that, and what could we do? Christiana Z. Peppard lays out the big questions of our global water problem. And no, shorter showers...

Conventional meat production causes harm to our environment and presents risks to global health, but people aren't going to eat less meat unless we give them alternatives that cost the same (or less) and that taste the same (or better)....

Despite water covering 71% of the planet’s surface, more than half the world’s population endures extreme water scarcity for at least one month a year. Current estimates predict that by 2040, up to 20 more countries could be...

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...

In 1958, after receiving a letter describing the deaths of songbirds due to the pesticide known as DDT, Rachel Carson began an investigation into the misuse of chemicals and their toll on nature. In 1962, she published her findings in...

In which John Green investigates the dawn of human civilization. John looks into how people gave up hunting and gathering to become agriculturalists, and how that change has influenced the world we live in today. Also, there are some...

There's two times more carbon in the earth's soil than in all of its vegetation and the atmosphere -- combined. Biogeochemist Asmeret Asefaw Berhe dives into the science of soil and shares how we could use its awesome carbon-trapping...

Here's a paradox you don't hear much about: despite a century of creating machines to do our work for us, the proportion of adults in the uS with a job has consistently gone up for the past 125 years. Why hasn't human labor become...

In which John Green teaches you about the massive immigration to the United States during the late 19th and early 20th century. Immigrants flocked to the US from all over the world in this time period. Millions of Europeans moved to the...

Scientists tend to be careful and resistant to big claims. So evidence for the possible end of the living world took a while to be seen as such. In this episode of Crash Course History of Science, Hank talks to us about where Climate...

If being alive on Earth were a contest, humans would win it hands down. We're like the Michael Phelps of being alive, but with 250,000 times more gold medals. Today Hank is here to tell us the specifics of why and how human population...

When you think of North American cuisine, do Indigenous foods come to mind? Chef Sean Sherman serves up an essential history lesson that explains the absence of Native American culinary traditions across the continent, highlighting why...

FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some keywords to get your googling started:



Malaria - a...

History's first empire rose out of a hot, dry landscape, without rainfall to nourish crops, without trees or stones for building. In spite of all this, its inhabitants built the world's first cities, with monumental architecture and...

In which John Green returns to teaching World History! This week, we'll be talking about the idea of civilization, some of the traditional hallmarks of so-called civilization, and why some people would choose to live outside the...

Co-creator of the philanthropic FEED bags, Ellen Gustafson says hunger and obesity are two sides of the same coin. In her talk, she launches The 30 Project -- a way to change how we farm and eat in the next 30 years, and solve the global...

In which Hank and John Green teach you about humanity conquering the Earth. Or at least moving from Africa into the rest of the Earth. As human beings spread out across the world and populations grew, humanity reached a critical mass of...

In this video Paul Andersen explains how society influences the natural world through increasing science, engineering and technology. As the world population increases it will require more natural resources and it will impact the global...

Did you know that France is a leading industrialized country with one of the world's largest economies? In fact, it's a main global exporter. Learn more about France’s key economic sectors and industries. Explore the country’s role and...

Doug Roth of GNC Farms shares their transition towards sustainable farming practices, becoming Food Alliance certified to enhance the market value of their green beans while maintaining environmentally friendly farming methods. This...

Three years ago I first filmed Mum and I collecting honey from our beehives! Here's what we're harvesting from the same hives in 2017!

This video explores why winter vegetables like brassicas and root crops taste sweeter during the colder months. It discusses the natural processes that lead to increased sugar content in these vegetables as a protection against freezing...

With an area of nearly 8.8 million square kilometers, or 3.4 million square miles, Brazil is about the same size as the continental US and the fifth-largest country in the world. It covers nearly half the South American continent, and,...

Whether it's energy, food or insurance, how much more you'll pay in the future depends a lot on where you live. But because of climate change, virtually no one will get away scot-free. The global economy is remarkably versatile and...