In which John Green teaches you about Nationalism. Nationalism was everywhere in the 19th century, as people all over the world carved new nation-states out of old empires. Nationalist leaders changed the way people thought of themselves...

Many African countries are poor for a simple reason, says entrepreneur Magatte Wade: governments have created far too many obstacles to starting and running a business. In this passionate talk, Wade breaks down the challenges of doing...

Why are some countries rich? Why are some countries poor? In the end it comes down to Productivity. This week on Crash Course Econ, Adriene and Jacob investigate just why some economies are more productive than others, and what happens...

In the 19th century, the California gold rush brought thousands of settlers to America's west coast. But finding gold may have been easier than transporting it back east. The only hope for avoiding a grueling six month wagon journey was...

India has a historic opportunity to power its industrialization with clean energy -- and its energy choices will make or break the world's fight against climate change, says clean energy executive, physicist and author Varun Sivaram....

Nandan Nilekani, the visionary co-founder of outsourcing pioneer Infosys, explains four brands of ideas that will determine whether India can continue its recent breakneck progress.

What is foreign aid? How much foreign aid does the United States distribute each year. Comparatively, not much. In fact, foreign aid only accounts for a small fraction of most nations' overall spending. But it's hugely important. Foreign...

Is Immigration good or bad? Immigration is a touchy subject in the United States. The 2016 election has been filled with debate about the subject, and both proponents and opponents have lots of reasons for their stance. But, this is a...

Sophie Howe is the world's only future generations commissioner, a new kind of government official tasked with advocating for the interests of generations to come and holding public institutions accountable for delivering long-term...

If you're wondering why blackface -- mimicking people of African descent via stereotypes and makeup-darkened skin -- is a big deal, then perhaps a little history lesson can help demystify the outcry. Dwan Reece, curator at the National...

History is written by the victors, as the saying goes -- but what would it look like if it was written by everyone? Journalist and TED Fellow Mikhail Zygar is on a mission to show us with Project1917, a "social network for dead people"...

"Building a 30-foot-high concrete structure from sea to shining sea is the most expensive and least effective way to do border security," says Congressman Will Hurd, a Republican from Texas whose district encompasses two times zones and...

In sub-Saharan Africa, HIV infections are more prevalent and doctors scarcer than anywhere else in the world. With a lack of medical professionals, Mitchell Besser enlisted the help of his patients to create mothers2mothers -- an...

Born out of a social media post, the Black Lives Matter movement has sparked discussion about race and inequality across the world. In this spirited conversation with Mia Birdsong, the movement's three founders share what they've learned...

Vincent Moon travels the world with a backpack and a camera, filming astonishing music and ritual the world rarely sees -- from a powerful Sufi ritual in Chechnya to an ayahuasca journey in Peru. He hopes his films can help people see...

How do you stand up to authoritarianism? And what does it mean to be "fearless"? In this powerful talk, housewife-turned-politician Sviatlana Tsikhanouskaya describes her unlikely bid to defeat Belarus's long-time autocratic leader in...

Barack Obama was the first Black man elected President in the United States in 2008. In this episode, Clint Smith will explore the early life, political career, presidential campaign, and legislative milestones of Barack Obama.

For over 30 years, thousands of people were imprisoned, tortured, and murdered under Rafael Trujillo's dictatorship in the Dominican Republic. Three sisters would go on to lead an underground revolution. But while their courage inspired...

Yang Lan, a journalist and entrepreneur who's been called "the Oprah of China," offers insight into the next generation of young Chinese citizens -- urban, connected (via microblogs) and alert to injustice.

In this video Paul Andersen explains how economic models, like supply and demand, can be applied to environmental systems. The market forces will not protect environmental services until proper valuation and externalities are...

We celebrate bold entrepreneurs whose ingenuity led them to success, but what happens to those who fail? Far too often, they bury their stories out of shame or humiliation -- and miss out on a valuable opportunity for growth, says author...

It is time to close the funding gap for Black female-led start-ups the world over, says entrepreneur Temie Giwa-Tubosun, whose company LifeBank delivers life-saving medical supplies to remote areas in Africa. Today, LifeBank operates...

It seems the more we know about how democracy works -- through government transparency, better media coverage, even new insights about our brains -- the less we trust democracy itself. Yet it's still, arguably, the best system of...

In which John Green teaches you about what is often called the Reagan Era. Mainly, it covers the eight years during which a former actor who had also been governor of the state of California was president of the United States. John will...