Temperatures are rising, and greenhouse gases are being emitted faster than ever. What's a planet to do? Hank explains the recommendations of some of the world's top scientists to stem global warming.

Developing new methods for survival in space is a constant and ever-evolving process, and a well known Earthly organism has the potential for multiple applications within space’s unforgiving environment!

Money is pollution's biggest driving force -- particularly, the cash invested in dirty energy projects, says financial responsibility campaigner Lucie Pinson. She shares a three-pronged approach to stop banks from funding fossil fuel...

Why Raindrops Are Mathematically Impossible

Still wondering why leaves are green and not purple or even black? CHLOROPHYLL! It's how leaves work.

From the very large to the very small, the universe is an amazing place. Here's my favorite ways to explore its scale.

In this video Paul Andersen explains how ionic solids form when cations and anions are attracted. When atoms lose or gain electrons they form ions. The strength of the attraction between ions is based on the amount of charge and the...

This video is about how Albert Einstein made a mistake when applying the Field Equations of General Relativity to cosmology (in particular, to a static, constant density universe), and solved the...

It's been a year since astronomer Tabetha Boyaijan found strange signals coming from a star called KIC 8462852, aka Tabby's Star. Now, new research shows that it's even stranger than we thought. Plus, good news from spaceflight company...

For as far back as we can trace our existence, humans have been fascinated with death and resurrection. But is resurrection really possible? And what is the actual difference between a living creature and a dead body anyway? Randall...

I don't think we're going to make it, John Doerr says in an emotional talk about climate change and investment. To create a world fit for his daughter to live in, he says, we need to invest now in clean, green energy.

The way smartphones made many devices nonessential is a model for a new way to think about improving energy efficiency.

Some of the universe's biggest action is a result of its smallest stuff

In the mid-ninth century, Chinese chemists, hard at work on an immortality potion, instead invented gunpowder. They soon found that this highly inflammable powder was far from an elixir of life -- they put it to use in bombs against...

We've all heard the rumor that certain foods provides less calories than it takes to digest. Is this true? Check out this SciShow Quick Question to find out!

Can you make a black hole out of light? Learn about the strange theoretical object called the 'Kugelblitz'.

Our lives depend on curbing climate change, but so many priorities seem to be in competition. What's the most urgent thing humanity can do right now? Social entrepreneur James Irungu Mwangi tells us why Africa could be the ideal home for...

All over the world, giant wave breaks appear because of underwater geology that supercharges their wave energy.

Hank gives us an inclusive overview of how everything in the universe is thought to have begun, and how cosmologists predict it will all come to an end. Now get happy!

It takes light a zippy 8 minutes to reach Earth from the surface of the Sun. But how long does it take that same light to travel from the Sun's core to its surface? Oddly enough, the answer is many thousands of years. Sten Odenwald...

SciShow Space reveals the discovery of a whole new kind of supernova, and the undead stars they leave behind.

Compared to most animals in the vast kingdom, humans have one of the longest childhoods. And you might think this is so we have time to develop our advanced thinking skills, but scientists think it might not be that simple.

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?

In the wealthiest circles of Victorian England, dieters would swallow an unhatched tapeworm and let it grow inside them by consuming undigested meals. And while modern fad diets aren't usually this extreme, they do promise similar...