Around 1917, an unknown illness dubbed "sleeping sickness" caused people to suffer severe sleepiness and delirium. Some even became paralyzed for decades until a temporary cure was discovered in the 1960s. The story of this illness is...

For years, catch-and-release anglers have been pouring soda on bleeding fish in an effort to help save their lives. But.. does this actually work?

In a culture where being social and outgoing are prized above all else, it can be difficult, even shameful, to be an introvert. But, as Susan Cain argues in this passionate talk, introverts bring extraordinary talents and abilities to...

3 Ways to Prevent Hurricanes (Maybe)

For most of human history, we have sought to treat and cure diseases. But only in recent decades did it become possible to ensure that a particular disease never threatens humanity again. Julie Garon and Walter A. Orenstein detail how...

Since the 1800s, a handful of oligarchs had controlled nearly all of El Salvador's land, forcing laborers to work for almost nothing. But in 1980, farmers and urban workers formed guerrilla groups to overthrow the US-backed dictatorship....

Traveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made ofother humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how...

What's stopping the American government from recording your phone calls, reading your emails and monitoring your location? Very little, says surveillance and cybersecurity counsel Jennifer Granick. The government collects all kinds of...

After weeks of exploring the existence of nature of god, today Hank explores one of the biggest problems in theism, and possibly the biggest philosophical question humanity faces: why is there evil?

Hank loves bananas and is worried about their future, so he did some investigating and wrote this episode of SciShow to share some kinda scary banana truths with us.

Keith Kirkland is developing wearable tech that communicates information using only the sense of touch. He's trying to figure out: What gestures and vibration patterns could intuitively communicate ideas like "stop" or "go"? Check out...

When General Stanley McChrystal started fighting al Qaeda in 2003, information and secrets were the lifeblood of his operations. But as the unconventional battle waged on, he began to think that the culture of keeping important...

It’s tough out there for small animals. Other animals are always trying to eat them, so they have to use tactics like blending in or being toxic to stay alive. These 5 animals, however, take self-preservation to a whole new...

Plastic bags are essentially indestructible, yet they're used and thrown away with reckless abandon. Most end up in the ocean, where they pollute the water and harm marine life; the rest are burned in garbage piles, where they release...

Happy New Years! Ring in the new year the right way....by learning all about alcohol!

The Science of Hangovers
0:35
Does Alcohol Kill Brain C
ells? 3:42
Does Alcohol Keep
You Warm? 5:46
Why Does Alcohol Burn Whe
n...

If you've ever had a little cut or scratch, you know it doesn't take long for it to heal! But do you know how different parts of your body work together to fix you up good as new when you're hurt?

Hank and the gang return with SciShow Quiz Show, where Sci Show's resident geniuses compete to win prizes for our subscribers!

A new report on climate change is pretty grim, but there is still a little hope.

We’ve sent more spacecraft to Mars than any other planet, but around half of the probes that have ever attempted to explore Mars have either crashed or disappeared.

Lizards tend to scurry around in short bursts rather than running long distances, and the reason why might be nearly as old as life on land.

Curious why you can't donate platelets after taking aspirin? Wonder no more!

How is the chemical energy of gasoline transformed into kinetic energy of a moving car? And where does that kinetic energy go when the car crashes into something and stops moving?

The term "gaslighting" has gained popularity in recent years, but what exactly does it entail?

Daniel Goleman, author of "Emotional Intelligence," asks why we aren't more compassionate more of the time.