Every day, airplanes fly over the Panama-Colombia border and drop millions of flies from the sky. It's part of an intense effort to control a deadly pest called screwworms, and believe it or not, it works.



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Chocolate being one of the world's most delicious foods, you'd think we would know everything about it. /Somebody/ domesticated wild cacao. It's just… nobody really knows who, or when… or where. But if we want chocolate for the long...

Join Squeaks as he learns about some of the most colorful animals ever: poison dart frogs! Some animals are bright and colorful to warn other animals that they might be dangerous... and some are just...

Early primates not only lived in North America -- our primate family tree actually originated here! So what happened to those early relatives of ours?

There are some diseases, like Zika or malaria, that get a lot of media coverage. However, every year, millions of people are infected with diseases that are just as deadly that we never hear anything about.

The U.S. is reportedly experiencing illegal immigration at the highest rates since 2007, with significant increases in the number of unaccompanied minors. It is these child migrants who are the subject of Valeria Luiselli’s book “Lost...

The remote Darien Gap cuts across Central America, serving as a critical but perilous path for migrants desperate to make the journey to North America. Many people fleeing poverty, persecution and violence feel it’s their only option....

Around 3,000 Hondurans are currently traveling through Guatemala on their way to the U.S. President Trump has threatened to close the U.S.-Mexico border if the caravan isn't stopped. But migrants say they fear not just deportation, but...

One of the world's most endangered species, the sea turtle, is under threat from human encroachment and poaching. But a conservation biologist has developed a strategy that could help save them. By placing 3D-printed eggs with GPS...

It's no joker. People in Mexico City gathered Saturday to celebrate 'Batman Day' and to mark the 80th anniversary of the appearance of crimefighter Bruce Wayne and his masked identity.

The United States can create a more humane immigration system; in fact, it's been done before, says policy analyst David J. Bier. Pointing to the historical success of the US guest worker program, which allows foreign workers to legally...

There are just six weeks left until the celestial odometer that is the Mayan calendar clicks over to the next b'akt'un, but in the meantime, scientists have been trying to solve the mystery behind the collapse of the Mayan civilization....

"Sí, se puede!" -- "Yes, we can!" It's the rallying cry Dolores Huerta came up with as a young activist in the 1970s, and she's lived by it in her tireless pursuit of civil rights ever since. With her signature wit and humor, Huerta...

Where did Zika come from, and what can we do about it? Molecular biologist Nina Fedoroff takes us around the world to understand Zika's origins and how it spread, proposing a controversial way to stop the virus -- and other deadly...

There are a number of bird species that construct pretty cool things - today on SciShow, we'll visit with three of them...

For the past 20 years, photographer and TED Fellow Jon Lowenstein has documented the migrant journey from Latin America to the United States, one of the largest transnational migrations in world history. Sharing photos from his...

In December 1910, the exiled former leader Manuel Bonilla boarded a borrowed yacht and set sail for Honduras in hopes of reclaiming power by whatever means necessary. Bonilla had a powerful backer: the notorious organization known...

In this episode of Crash Course History of Science, we travel to the Americas to ask the question, "When are we?" and get some answers. We'll look at the Maya, Inca, and Olmec civilizations and how they recorded their science.

What does a ginkgo tree have in common with a dinosaur?

Lice... the mere mention of them is enough to make most people all itchy. Well, get ready to get scratching, because we've compiled seven squirm-inducing lice facts on this week's List Show!

"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 this video Paul Andersen explains how the atmosphere surrounds the planet. The state of the atmosphere is climate and is affected by unequal heating, the Coriolis Effect, and the ocean. Convection cells and ENSO are discussed in...

In which John Green teaches you about Imperialism. In the late 19th century, the great powers of Europe were running around the world obtaining colonial possessions, especially in Africa and Asia. The United States, which as a young...

So, what is geography? In our first episode of Crash Course Geography, we will endeavor to answer this seemingly simple question with the help of a similarly simple factoid: that the US imports more than 3 billion pounds of bananas from...