TED-Ed
How much land does it take to power the world? | TED-Ed
No matter how we make electricity, it takes up space. Coal requires mines, and plants to convert it into electricity. Nuclear power takes uranium mines, facilities to refine it, a reactor, and a place to store the spent fuel safely....
SciShow
The Cosmic Lasers That Form in Outer Space
Lasers are incredible narrow beams of light we can use to do everything from cutting metal to operating on people's eyeballs. But even though we came up with the idea on our own, humans didn’t actually make the first lasers.
TED Talks
TED: The future we're building -- and boring | elon Musk
elon Musk discusses his new project digging tunnels under LA, the latest from Tesla and SpaceX and his motivation for building a future on Mars in conversation with TeD's Head Curator, Chris Anderson.
SciShow
Big Idea: Gunpowder
Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.
SciShow
The Bizarre Future of Stroke Treatment
Even with rapid action, strokes can lead to lasting brain damage. So researchers are developing new techniques like freezing brains to buy time and using using parts of pork bladders to regrow brain tissue.
SciShow
Why Are Plants Green Instead of Black?
Nothing says "nature" like a lush green forest. But why are plants green in the first place?
TED Talks
Keith Bellows: The camel's hump
Keith Bellows gleefully outlines the engineering marvels of the camel, a vital creature he calls "the SUV of the desert." Though he couldn't bring a live camel to TED, he gets his camera crew as close as humanly possible to a one-ton...
MinutePhysics
MAGNETS: How Do They Work?
ow do magnets work? Why do they attract and repel at long distances? Is it magic? No... it's quantum mechanics, and a bit more, as we explain in this, the longest MinutePhysics video ever.
TED Talks
Boaz Almog: The levitating superconductor
How can a super-thin 3-inch disk levitate something 70,000 times its own weight? In a riveting demonstration, Boaz Almog shows how a phenomenon known as quantum locking allows a superconductor disk to float over a magnetic rail --...
TED-Ed
TED-ED: Why is glass transparent? - Mark Miodownik
If you look through your glasses, binoculars or a window, you see the world on the other side. How is it that something so solid can be so invisible? Mark Miodownik melts the scientific secret behind amorphous solids.
TED Talks
Stewart Brand + Mark Z. Jacobson: Debate: Does the world need nuclear energy?
Nuclear power: the energy crisis has even die-hard environmentalists reconsidering it. In this first-ever TED debate, Stewart Brand and Mark Z. Jacobson square off over the pros and cons. A discussion that'll make you think -- and might...
TED Talks
TED: A crash course in organic chemistry | Jakob Magolan
Jakob Magolan is here to change your perception of organic chemistry. In an accessible talk packed with striking graphics, he teaches us the basics while breaking the stereotype that organic chemistry is something to be afraid of.
SciShow
How Plants Attract Bodyguards
Lots of plants make nectar to attract pollinators, but some make special, extra nectar pots outside their flowers to feed their bodyguards.
Crash Course Kids
Food Chains Compilation
Maybe you'd like to just hear about one topic for a while. We understand. So today, let's just watch some videos about how we get energy. And how one animal gets energy from another animal, or a plant. It's all about food chains and food...
SciShow
Are We Finally on the Road to Fusion Power?
Scientists working at a nuclear fusion facility in Oxford announced a record-breaking result. And while there's still a lot to figure out to make fusion viable, this brings us one step closer to realizing a technology with huge potential...
SciShow
These Animals Don’t Need Oxygen?!
It seems obvious that animals need oxygen to live, but deep in the Mediterranean Sea there is a very small animal that might be doing just fine without any oxygen at all.
TED-Ed
TED-Ed: Can the economy grow forever? | TED-Ed
Many economists think that an eternally growing economy is necessary to keep improving people's lives, and that if the global economy stops growing, people would fight more over the fixed amount of value that exists, rather than working...
MinutePhysics
The Most Burly Hurls
Which is the most intense Olympic throwing event? Shot put? Hammer? Discus? Javelin?
TED Talks
Tony Fadell: The first secret of design is ... noticing
As human beings, we get used to "the way things are" really fast. But for designers, the way things are is an opportunity ... Could things be better? How? In this funny, breezy talk, the man behind the iPod and the Nest thermostat shares...
SciShow
Interview with EPA Administrator McCarthy
Hank interviews Administrator Gina McCarthy of the United States Environmental Protection Agency. They discuss getting people to care about climate change, the EPA's goals going into the United Nations Climate Change Conference, and the...
TED-Ed
TED-Ed: Could we survive prolonged space travel? - Lisa Nip
Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and bone growth, and high doses of radiation cause irreversible mutations. As we seriously consider the human species becoming space-faring, a big...
TED-Ed
TED-ED: Solid, liquid, gas and plasma? - Michael Murillo
Have you ever seen static electricity cause a spark of light? What is that spark? What about lightning, the Northern Lights, or the tail of a comet? All of those things and many others _ in fact, 99.9% of the universe -- are made of...
TED-Ed
TED-ED: How plants tell time - Dasha Savage
Morning glories unfurl their petals like clockwork in the early morning. A closing white waterlily signals that it's late afternoon. And moon flowers, as their name suggests, only bloom under the night sky. What gives plants this innate...
Bozeman Science
Light and Matter
In this video Paul Andersen explains why light is important in probing matter. Light travels in photons and the energy of individual photons is determined by Planck's equation. Infrared spectroscopy is useful in detecting the vibrations...