It's 4am, and the big test is in 8 hours. You've been studying for days, but you still don't feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep? Shai Marcu defends the...

Today on the SciShow Talk Show, our Technical Director Nick Jenkins stumps Hank about how many frames per second the human eye can see, and Jessi from Animal Wonders shares Hara the Harris's hawk.

Paul Andersen explains how organisms use information to communicate with each other. Signals are used by bees doing the waggle dance to communicate the location of flowers. Territorial markings are used by wolves to establish...

Today we’re going to go a little meta and talk about how computer science can support learning with educational technology. We here at Crash Course are big fans of interactive in-class learning and hands-on experiences, but we also...

So today we're going to look at the rather thorny issue of the media and its role in politics. Wether you're talking about older forms of media like newspapers and radio or newer forms like television and the Internet, all media serves...

Erica Woodahl tells us how individual genetic screenings could help doctors prescribe better medications and Jessi from Animal Wonders brings in two fantastic rodents: Huckleberry the beaver and Chili Pepper the Patagonian cavy. Chapters...

The bad backs, elbow pain, and creaky knees so common in older people often aren't just "old age." In fact, the source of this stiffness plagues many young people as well. The culprit is arthritis: a condition that affects over 90...

Trinidad and Tobago amassed great wealth in the 1970s thanks to oil -- but 2 out of every 3 dollars earmarked for development ended up wasted or stolen. This fact has haunted Afra Raymond for 30 years. Shining a flashlight on a continued...

Overcrowded clinics, extensive wait times and overworked doctors are taking a devastating toll on mothers and children in India. In this eye-opening talk, urogynecologist and TED Fellow Aparna Hegde exposes the systemic gaps that lead...

Chris Domas is a cybersecurity researcher, operating on what's become a new front of war, "cyber." In this engaging talk, he shows how researchers use pattern recognition and reverse engineering (and pull a few all-nighters) to...

A war zone can pass for a mostly peaceful place when no one is watching, says investigative journalist and TED Fellow Anjan Sundaram. In this short, incisive talk, he takes us inside the conflict in the Central African Republic, where he...

Decking out your pets with miniature hats is a sure recipe for a great photo. But scientists are accessorizing animals with various technological trinkets to help us learn more about the animals themselves and the places they live.

Fake news can sway elections, tank economies and sow discord in everyday life. Data scientist Sinan Aral demystifies how and why it spreads so quickly -- citing one of the largest studies on misinformation -- and identifies five...

Scientists were able to get molecular information from 1.7 million years old teeth using a new method that could completely change how we study extinct organisms.

There is a lot of excitement around the field of Big Data, but today we want to take a moment to look at some of the problems it creates. From questions of bias and transparency to privacy and security concerns, there is still a lot to...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Sexting, like anything that's fun, runs its risks -- but a serious violation of privacy shouldn't be one of them....

Transporters and Quantum Teleportation

Why build a virtual world? Philip Rosedale talks about the virtual society he founded, Second Life, and its underpinnings in human creativity. It's a place so different that anything could happen.

What if we had a map of ... everything? Jack Dangermond, a visionary behind the geographic information system (GIS) technology used to map and analyze all kinds of complex data, walks us through the interconnected technologies gathering...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Psychologist Elizabeth Loftus studies memories. More precisely, she studies false memories, when people either...

Imagine if you could surf Facebook ... from the Middle Ages. Well, it may not be as far off as it sounds. In a fun and interesting talk, Frederic Kaplan shows off the Venice Time Machine, a project to digitize 80 kilometers of books to...

On April 3, 2016 we saw the largest data leak in history. The Panama Papers exposed rich and powerful people hiding vast amounts of money in offshore accounts. But what does it all mean? We called Robert Palmer of Global Witness to find...

Explore the theories of human consciousness and the science of how your brain works to create a conscious experience. -- Patient P.S. suffered a stroke that damaged the right side of her brain, leaving her unaware of everything on her...

You might finally be able to watch that 4k video without buffering, thanks to quantum mechanics and orbital angular momentum.