If our sun turned into a black hole, you might think our solar system would be doomed, but in reality that's just not how black holes work.

Can't wait to get into outer space? Well there's a bit you need to know first... Spending time in zero gravity can have some pretty extreme effects on the human body. Still scientists are already making plans for long trips to other...

The True Science of Parallel Universes

Another year, another security breach that could expose all of your information. Installing updates might be a good New Year's resolution.

For thousands of years, sailors have been telling stories of a mysterious phenomenon called dead water. Even after scientists figured out why it happens, it still affects swimmers today.

Why You Should Care About Nukes

Making a faster plane takes more than building better engines and structures. To go supersonic, engineers had to solve hundreds of problems -- including ditching one of the biggest assumptions in aerodynamics!

This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Aracelis Girmay, directed by Jordan...

Astronomers have finally found evidence to help solve the missing baryon problem, and they're pointing telescopes toward the Intergalactic Medium to figure it out.

There are more than 10,000 nuclear weapons in existence today, each one capable of causing immense destruction. Why don't we talk about this threat as much as some other major issues? In this practical talk, nuclear security expert Emma...

One moment, you're fine. The next, moment it seems like your nose is recreating a scene from The Shining. Why do we get nosebleeds?

12,000 years ago, the earth was very different, and so were some of the animals living on it! Here are 5 giants creatures you might have seen back then.

You may have read headlines suggesting that if you have allergies, you might be at greater risk of developing mental illness. But don't panic just yet. Hank unpacks these findings on this week's SciShow News.

A happy song about global warming, from Jill Sobule.

Summer, 2016: amid populist revolts, clashing resentments and fear, writer Anand Giridharadas doesn't give a talk but reads a letter. It's from those who have won in this era of change, to those who have, or feel, lost. It confesses to...

Sir Tim Berners-Lee invented the World Wide Web 25 years ago. So it’s worth a listen when he warns us: There’s a battle ahead. Eroding net neutrality, filter bubbles and centralizing corporate control all threaten the web’s wide-open...

You might have realized that lots of ground-based telescopes are located in Hawaii...but why? It's not just for the beautiful sunsets.

We're raising our girls to be perfect, and we're raising our boys to be brave, says Reshma Saujani, the founder of Girls Who Code. Saujani has taken up the charge to socialize young girls to take risks and learn to program -- two skills...

Have you ever sat down to take a math test and immediately felt your heart beat faster and your palms start to sweat? This is called math anxiety, and if it happens to you, you're not alone: Researchers think about 20 percent of the...

Lice are tiny bugs that love to live in people's hair and suck their blood! Anyone can get lice and they can be tricky to get rid of, but Jessi and Squeaks are here with some lice facts that could help you avoid these itchy little critters!

You and your team have crash-landed on an ancient planet. Can you appease the three alien overlords who rule it and get your team safely home? Created by logician Raymond Smullyan, and popularized by his colleague George Boolos, this...

Radiation is all around us, and when you travel by plane, you're exposed to cosmic radiation. So what does this mean for our health? Does air travel expose us to unsafe radiation levels? Check out this episode to see how flying among...

Who controls the internet? Increasingly, the answer is large corporations and governments -- a trend that's threatening digital privacy and access to information online, says web developer Tamas Kocsis. In this informative talk, Kocsis...

Elephants are huge, so you might think all those extra cells would mean more cancer, but scientists have some new insights into why this is isn't the case.