Imagine a world where humanity masters every planetary resource available to it—our first step on the famous Kardeshev scale of technological advancement. How distant is that step? Will we even become a true Type-1 civilization, and how...

In many parts of the world heat waves are happening more often with greater intensity and for longer durations. By 2050, Earth’s mid-latitudes could be experiencing extreme heat between 90 and 180 days a year, with tropical regions...

Today, some companies are working hard to prevent consumers from repairing products on their own. In many cases, repair can only be done by the original manufacturer, if at all. With limited repair options available, we end up buying new...

What is the maximum height for a mountain on Earth!? And why?

The body can get a whole lot colder - but not a whole lot hotter - before we die. Why is that?<br/>

In 1991, a subatomic particle smashed into Earth's atmosphere traveling faster than anything humans can replicate. It's the most energetic particle detected to date, and maybe even the fastest (except light itself). Astronomers call it...

Quantum mechanics forbids us from measuring the universe beyond a certain level of precision. But that doesn’t stop us from trying. And in some cases succeeding, by squeezing the Heisenberg uncertainty principle to its breaking point.

Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine has ever been experiment verified. All break the laws of...

We humans have always been explorers. The great civilizations that have arisen across the world are owed to our restless ancestors. These days, there’s not much of Earth left to explore. But if we look up, there’s a whole universe out...

Do you ever think of what could cause the next big extinction? How about a super massive tropical storm that sweeps over continents? Hey, it could happen! Check out this SciShow Dose to see how a hypercane would be possible.

Dinosaurs were huge—it's common knowledge. So why aren't modern mammals anywhere near that size? In this episode of SciShow, Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size...

Airplanes are one of the quickest ways to get anywhere, but commercial jets haven't gotten much fast since the 1950's. Why is that?

Paul Andersen (with the help of PatricJMT) explains why mathematics may be biology's next microscope.

Can Batteries Power Everything? This video is about the physical and chemical limitations to electrolytic batteries, and how we might surpass the energy density and specific energy of lithium-ion...

Billions of galaxies, each with billions of stars, each with .... rather a lot of particles in them. And then there's dark matter, black holes, planets, and the particles and radiation in between the stars and galaxies. But.... is the...

Airplanes are one of the quickest ways to get anywhere, but commercial jets haven't gotten much fast since the 1950's. Why is that?

Do you ever think of what could cause the next big extinction? How about a super massive tropical storm that sweeps over continents? Hey, it could happen! Check out this SciShow Dose to see how a hypercane would be possible.

The newest 8K TVs have 33 million pixels - but can you even see that many?

At TED U, Gever Tulley, founder of the Tinkering School, spells out 5 dangerous things you should let your kids do -- and why a little danger is good for both kids and grownups.

Technologist and futurist Bill Joy talks about several big worries for humanity -- and several big hopes in the fields of health, education and future tech.

How high can you count on your fingers? It seems like a question with an obvious answer. After all, most of us have ten fingers -- or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands,...

Q&A #2 + Net Neutrality Nuance

Plenty of other planets in the Solar System have rings. So why not Earth?

History has shown us that in moments of crisis, society can truly transform, says environmental educator Severn Cullis-Suzuki. Nearly 30 years ago, at just 12 years old, she spoke at the UN's Earth Summit in hopes of reversing the...