For decades, scientists have been studying the cause of the Younger Dryas, and trying to figure out if something like it could happen again. And it turns out that what caused this event is the subject of a heated debate.

On the weekend of April 29th and 30th this year, a series of thunderstorms slammed the southern and midwestern US. SciShow News takes a look at those deadly storms using the latest, high-resolution data from the NOAA's GOES-16 weather...

About 5 million years ago, a new predator made its way from the south and onto the coastal plains of North America. It was a giant, flightless, carnivorous bird and came to be known by one of the coolest and most richly earned nicknames...

Roe v. Wade, the landmark 1973 Supreme Court decision protecting people's right to have an abortion in the United States, will be overturned within a year, says reproductive rights attorney Kathryn Kolbert. In this electrifying call to...

Find out how baby sea turtles find their way home after hatching!

Today, we're familiar with two types of flying vertebrates -- birds and bats. But over 66 million years ago, there was a giraffe-sized reptile that soared through the sky.

How Fire Ants Took Over America



Fire ants are several species of ants in the genus Solenopsis, which includes over 200 species. Solenopsis are stinging ants, and most of their common names reflect this, for example, ginger...

The United States has a lot more power outages than other countries do, and fixing this problem will be a massive undertaking.

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Across the United States, the average customer loses...

Hollywood can be pretty negligent about physics and astronomy, even in really good movies, but there are a few specific misconceptions that pop up again and again.

With the right questions, and careful observation, a ghost story can transform from a spooky anecdote to a scientific experiment.

In which John Green teaches you about the Mexican-American War in the late 1840s, and the expansion of the United States into the western end of North America. In this episode of Crash Course, US territory finally reaches from the...

Este es un vídeo sobre la paradoja de Simpson, una paradoja estadística y falacia ecológica donde se pueden sacar resultados aparentemente contradictorios de los mismos datos dependiendo en cómo se...

Women have made enormous progress over the last century -- challenging the status quo, busting old taboos and changing business from the inside out. But when it comes to political representation, there's still a long way to go, says...

The US consumes 25% of the world's oil -- but as energy tycoon T. Boone Pickens points out onstage, the country has no energy policy to prepare for the inevitable. Is alternative energy our bridge to an oil-free future? After losing $150...

Microbes are all around us, on everything we touch, drink, or eat. While most microbes can't hurt us, you don't have to go much farther than your own backyard to find some that really can! Chapters PLAGUE 0:39 TULAREMIA 4:48...

Stacey Baker has always been obsessed with how couples meet. When she asked photographer Alec Soth to help her explore this topic, they found themselves at the world's largest speed-dating event, held in Las Vegas on Valentine's Day, and...

This video discusses the issue of tiger ownership in Texas, where there are more tigers in captivity than in the wild. It explores the reasons behind this phenomenon, such as the lack of laws against owning tigers and the successful...

Why there will likely soon be more tigers in backyards in Texas than in the wilds of Asia.

Ocean plastic pollution is a massive environmental problem. Millions of tons of plastic waste enter the ocean every year, even plastic that goes in the trash can often ends up in the sea! This week we learn about the Great Pacific...

How do we comprehend a storm like Hurricane Harvey? Let's put it into perspective.

Hank talks about everyone's favorite squeaky-voice gas and why it's important for more than party balloons.

How DO you make a digital clock?

Population ecology is the study of groups within a species that interact mostly with each other, and it examines how they live together in one geographic area to understand why these populations are different in one time and place than...

Hank tells us about the enormous concentrations of plastic debris floating around in the Pacific Ocean, why they're there and why they're a problem.