TED-Ed
TED-ED: Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei
Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won't last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy...
TED-Ed
TED-ED: How transistors work - Gokul J. Krishnan
Modern computers are revolutionizing our lives, performing tasks unimaginable only decades ago. This was made possible by a long series of innovations, but there's one foundational invention that almost everything else relies upon: the...
TED-Ed
TED-Ed: Can you solve the bridge riddle? - Alex Gendler
Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn't so smart either. But now is not the time for regrets because you need to...
TED-Ed
TED-Ed: Is there a limit to technological progress? - Clement Vidal
Many generations have felt they've reached the pinnacle of technological advancement. Yet, if you look back 100 years, the technologies we take for granted today would seem like impossible magic. So - will there be a point where we reach...
TED-Ed
TED-Ed: What causes kidney stones? - Arash Shadman
The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn't actually swallow a stone the size of a coconut; kidney stones form inside the body. So how do they grow in the first...
TED-Ed
TED-ED: The evolution of the human eye - Joshua Harvey
The human eye is an amazing mechanism, able to detect anywhere from a few photons to a few quadrillion, or switch focus from the screen in front of you to the distant horizon in a third of a second. How did these complex structures...
TED-Ed
TED-Ed: How X-rays see through your skin - Ge Wang
Originally discovered by accident, X-rays are now used about 100 million times a year in clinics around the world. How do these magic eyes work? Ge Wang details the history and mechanics of the X-ray machine and CT scanners.
TED-Ed
TED-Ed: The physics of playing guitar - Oscar Fernando Perez
Guitar masters like Jimi Hendrix are capable of bending the physics of waves to their wills, plucking melody from inspiration and vibration. But how do wood, metal, and plastic translate into rhythm, melody, and music? Oscar Fernando...
TED-Ed
TED-ED: The history of chocolate - Deanna Pucciarelli
If you can't imagine life without chocolate, you're lucky you weren't born before the 16th century. Until then, chocolate only existed as a bitter, foamy drink in Mesoamerica. So how did we get from a bitter beverage to the chocolate...
TED-Ed
TED-ED: The life cycle of a t-shirt - Angel Chang
Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what's its environmental impact? Angel...
TED-Ed
TED-Ed: How a few scientists transformed the way we think about disease - Tien Nguyen
This video was created with support from the U.S. Office of Research Integrity: http://ori.hhs.gov. For several centuries, people though diseases were caused by wandering clouds of poisonous vapor. We now know that this theory is pretty...
TED-Ed
TED-ED: The accident that changed the world - Allison Ramsey and Mary Staicu
In 1928, scientist Alexander Fleming returned to his lab and found something unexpected: a colony of mold growing on a Petri dish he’d forgotten to place in his incubator. And around this colony of mold was a zone completely and...
TED-Ed
TED-Ed: Are spotty fruits and vegetables safe to eat? - Elizabeth Brauer
In 2010, 30 billion dollars worth of fruits and vegetables were wasted by American retailers and shoppers, in part because of cosmetic problems and perceived spoilage. But what are these spots, anyway, and are they okay to eat? Elizabeth...
TED-Ed
TED-Ed: The benefits of good posture - Murat Dalkilinc
Has anyone ever told you, "Stand up straight!" or scolded you for slouching at a family dinner? Comments like that might be annoying"but they're not wrong. Your posture is the foundation for every movement your body makes and can...
TED-Ed
TED-ED: The rise and fall of the Inca empire - Gordon McEwan
It was the western hemisphere's largest empire ever, with a population of nearly 10 million subjects. Yet within 100 years of its rise in the fifteenth century, the Inca Empire would be no more. What happened? Gordon McEwan details the...
TED-Ed
TED-ED: How computer memory works - Kanawat Senanan
In many ways, our memories make us who we are, helping us remember our past, learn and retain skills, and plan for the future. And for the computers that often act as extensions of ourselves, memory plays much the same role. Kanawat...
TED-Ed
TED-ED: Can robots be creative? - Gil Weinberg
People have been grappling with the question of artificial creativity -- alongside the question of artificial intelligence -- for over 170 years. For instance, could we program machines to create high quality original music? And if we...
TED-Ed
TED-Ed: What makes the Great Wall of China so extraordinary
The Great Wall of China is a 13,000-mile dragon of earth and stone that winds its way through the countryside of China. As it turns out, the wall's history is almost as long and serpentine as its structure. Megan Campisi and Pen-Pen Chen...
TED-Ed
TED-Ed: A brief history of video games (Part I) - Safwat Saleem
Video games are everywhere these days, but where did they actually come from? The history of video games is a complicated story that involves giant computers in science labs, the founder of Chuck E. Cheese and billions of dollars in...
PBS
Pbs Learning Media: The Intelligent Robot
Find out how robots are viewed as machines that perform tasks that humans can't (or won't) undertake. [4:26]
PBS
Pbs Learning Media: I Farm
Learn about a California pistachio farmer who developed an iPad app to improve irrigation. [4:59]
PBS
Pbs Learning Media: Career Connections: Sound Engineer
Many sound engineers creatively use technology to produce audio for music, radio, film, and television. To prepare for this career path, studying media arts and science would be beneficial. [5:38]
PBS
Pbs Learning Media: Career Connections: Mechanical Engineer
Meet three mechanical engineers who are designing the next generation of jet engines at a major US company. They explain how their curiosity about how things work led them to advanced engineering degrees and cool careers with aircraft...
PBS
Pbs Learning Media: Nova: What Will the Future Be Like?: Wearable Robots
Learn about in advances in powered exoskeletons, a kind of wearable robot. [5:44]