Denial of Service (DOS) or Distributed Denial of Service (DDOS) attacks take down servers by distracting them with meaningless traffic until basically they can't take it any more. The way we talk about the result of a software program...

This is episode 4 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a quest to collect three artifacts and...

Because smaller animals have to eat more relative to their bodyweight, Tolkein’s hobbits need to eat a lot - not for comfort, but for survival.

Humanity is on its way to creating a "black ball": a technological breakthrough that could destroy us all, says philosopher Nick Bostrom. In this incisive, surprisingly light-hearted conversation with Head of TED Chris Anderson, Bostrom...

Glenn Greenwald was one of the first reporters to see -- and write about -- the Edward Snowden files, with their revelations about the United States' extensive surveillance of private citizens. In this searing talk, Greenwald makes the...

How much land mass would renewables need to power a nation like the UK? An entire country's worth. In this pragmatic talk, David MacKay tours the basic mathematics that show worrying limitations on our sustainable energy options ... and...

In which John Green teaches you how Russia evolved from a loose amalgamation of medieval principalities known as the Kievan Rus into the thriving democracy we know today. As you can imagine, there were a few bumps along the road. It...

The path to better food is paved with data, says entrepreneur Erin Baumgartner. Drawing from her experience running a farm-to-table business, she outlines her plan to help create a healthier, zero-waste food system that values the...

As digital assets like cryptocurrency and NFTs become more mainstream, design thinker and head of Instagram Adam Mosseri believes that creators are uniquely positioned to benefit. These blockchain-enabled technologies could remove the...

The brain of luchador Hanko wants to take on the worlds fastest supercomputer, "K," in a cage match for bragging rights - which one is the most impressive information processor?

Shielded from the gorgon's stone gaze, Perseus crept through Medusa's cave. When he reached her, he drew his sickle and brought it down on her neck. From Medusa's neck sprung two children. One was a giant wielding a golden sword; the...

Proteins are remarkable molecular machines: they digest your food, fire your neurons, power your immune system and so much more. What if we could design new ones, with functions never before seen in nature? In this remarkable glimpse of...

Be blown away with this episode of SciShow News as Hank talks about using the power of one of earths most powerful energy sources: Volcanoes!

As of 2005, only 15 percent of the world was mapped. This slows the delivery of aid after a disaster -- and hides the economic potential of unused lands and unknown roads. In this short talk, Google's Lalitesh Katragadda demos Map Maker,...

Many species of mantis shrimp rely on their incredible punching abilities to stun their prey. But it turns out they don’t have to be mature mantis shrimp to start getting their punch on. And baby Philippine mantis shrimp can punch nearly...

Five Crazy Bridges for Animals

Thirty-nine million people in the world are blind, and the majority lost their sight due to curable and preventable diseases. But how do you test and treat people who live in remote areas, where expensive, bulky eye equipment is hard to...

Stefan returns to challenge Hank on Quiz Show, and the rest of the SciShow Tangents crew decided to join in the fun!

Scientists have had some success with a new technique to restore awareness to a person in a vegetative state & also that we could potentially use the water cycle to power most of the United States!

Energy is neither created nor destroyed - and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Joshua M. Sneideman examines the many ways in which energy cycles through our...

Humanity now has incredible power to shape nature and the Earth: the power to destroy and the power to repair, says sustainability champion and UNDP Administrator Achim Steiner. In this action-oriented talk, Steiner shows how this power...

Our leaders need to be held accountable, says journalist Heather Brooke. And she should know: Brooke uncovered the British Parliamentary financial expenses that led to a major political scandal in 2009. She urges us to ask our leaders...

If you had to spend your entire life swimming through water, never touching the ground, you’d probably get pretty dang good at swimming. This is what life is like for the gossamer worm, and why its abilities could be inspiring new marine...

This video is chapter 8 in my series on special relativity, and it presents a hands-on explanation of the resolution to the Twins Paradox using the mechanical minkowski diagram, aka mechanical Lorentz transformation, aka spacetime globe....