SciShow
How Does a Photon Become a Film Photo?
The chemistry behind film photography is pretty fascinating. How do film cameras help us turn light into a physical image?
TED-Ed
TED-Ed: What's a smartphone made of? - Kim Preshoff
As of 2018, there are around 2.5 billion smartphone users in the world. If we broke open all the newest phones and split them into their component parts, that would produce around 85,000 kg of gold, 875,000 of silver, and 40,000,000 of...
TED Talks
TED: 3 fears about screen time for kids -- and why they're not true | Sara DeWitt
We check our phones upwards of 50 times per day -- but when our kids play around with them, we get nervous. Are screens ruining childhood? Not according to children's media expert Sara DeWitt. In a talk that may make you feel a bit less...
TED Talks
TED: You don't need an app for that | Toby Shapshak
Are the simplest phones the smartest? While the rest of the world is updating statuses and playing games on smartphones, Africa is developing useful SMS-based solutions to everyday needs, says journalist Toby Shapshak. In this...
SciShow
5 Devastating Security Flaws You've Never Heard Of
Devastating vulnerabilities are hiding in the technology in programs, protocols, and hardware all around us. Most of the time, you can find ways to protect yourself.
TED Talks
TED: How tech companies deceive you into giving up your data and privacy | Finn Lutzow-Holm Myrstad
Have you ever actually read the terms and conditions for the apps you use? Finn Lutzow-Holm Myrstad and his team at the Norwegian Consumer Council have, and it took them nearly a day and a half to read the terms of all the apps on an...
SciShow
What's the Best Way to Rescue a Drowned Phone?
What should you do after your phone goes for a swim?
SciShow
Does Using Your Phone Really Hurt Your Sleep?
You've probably heard that some types of light, like the kind that comes from your phone or laptop, can be bad for your sleep if you use them too close to bedtime. But let's be real, nighttime is the best time to binge TV, so are we...
Crash Course
The Railroad Journey and the Industrial Revolution: Crash Course World History 214
In which John Green teaches you about railroads, and some of the ways they changed the world, and how they were a sort of microcosm for the Industrial Revolution as a whole. Prior to the invention of steam powered railroads, pretty much...
TED Talks
Financial inclusion, the digital divide and other thoughts on the future of money | Ajay Banga
Roughly two billion people worldwide don't have access to banks or financial services like credit, insurance and investment -- or even a way to formally prove their identity. How do we bridge this divide? Mastercard CEO Ajay Banga sits...
TED Talks
Barry Schwartz: The paradox of choice
Psychologist Barry Schwartz takes aim at a central tenet of western societies: freedom of choice. In Schwartz's estimation, choice has made us not freer but more paralyzed, not happier but more dissatisfied.
3Blue1Brown
The DP-3T algorithm for contact tracing (via Nicky Case)
An overview of a simplified version of the DP-3T algorithm for privacy-first contact-tracing
TED Talks
Matt Mills: Image recognition that triggers augmented reality
Matt Mills and Tamara Roukaerts demonstrate Aurasma, a new augmented reality tool that can seamlessly animate the world as seen through a smartphone. Going beyond previous augmented reality, their "auras" can do everything from making a...
TED Talks
TED: An Internet without screens might look like this | Tea uglow
Designer Tea uglow is creating a future in which humanity's love for natural solutions and simple tools can coexist with our need for information and the devices that provide us with it. "Reality is richer than screens," she says. "We...
TED Talks
TED: My stroke of insight | Jill Bolte Taylor
Jill Bolte Taylor got a research opportunity few brain scientists would wish for: She had a massive stroke, and watched as her brain functions -- motion, speech, self-awareness -- shut down one by one. An astonishing story.
TED Talks
Wadah Khanfar: A historic moment in the Arab world
As a democratic revolution led by tech-empowered young people sweeps the Arab world, Wadah Khanfar, the head of Al Jazeera, shares a profoundly optimistic view of what's happening in Egypt, Tunisia, Libya and beyond -- at this powerful...
TED Talks
TED: Your self-driving robotaxi is almost here | Aicha Evans
We've been hearing about self-driving cars for years, but autonomous vehicle entrepreneur Aicha Evans thinks we need to dream more daringly. In this exciting talk, she introduces us to robotaxis: fully autonomous, eco-friendly shuttles...
TED Talks
TED: The agony of opioid withdrawal -- and what doctors should tell patients about it | Travis Rieder
The United States accounts for five percent of the world's population but consumes almost 70 percent of the total global opioid supply, creating an epidemic that has resulted in tens of thousands of deaths each year. How did we get here,...
TED Talks
Chris Domas: The 1s and 0s behind cyber warfare
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...
SciShow
When Everything Feels Like a Dream | Depersonalization-Derealization Disorder
It's not rare to feel like we're dreaming, even right after we wake up, but when it sticks around for longer than it should, it can merit its own diagnosis: depersonalization-derealization disorder (DDD). Hank unpacks what this disorder...
TED Talks
TED: Technology crafts for the digitally underserved | Vinay Venkatraman
Two-thirds of the world may not have access to the latest smartphone, but local electronic shops are adept at fixing older tech using low-cost parts. Vinay Venkatraman explains his work in "technology crafts," through which a mobile...
Crash Course
Why It's So Hard To Make Better Batteries: Crash Course Engineering #32
There are batteries powering so many parts of our everyday lives, so today we’re going to talk about how they work and how we can make them better. We’ll explain how they provide power by discharging ions between a cathode and an anode,...
SciShow
How Do I Make My Batteries Last Longer?
Do you wait to charge your phones battery until it's close to dying? If you do- surprise! You're doing it wrong.
SciShow
How Silly String Saves Lives
Silly String. It's awesome for pranks or party shenanigans, but this foam could also save your life someday.