PBS
Superluminal Time Travel + Time Warp Challenge Answer
By choosing the right path and the right reference frames, any superluminal motion can lead to information or objects returning to their origin before they depart.
SciShow
Radiation Is a Green Diamond’s Best Friend
Diamonds are iconic, but some of them might make others a little green with envy.
Bozeman Science
Cellular Variation
Paul Andersen explains how variation is created within a cell. He starts by showing how molecular variation can increase fitness at the local level. He explains how an additional chlorophyll molecule allows plants to absorb more light...
Crash Course
Movies are Magic: Crash Course Film History
Well, they're not really "magic." Maybe "illusion" is a better way to say it. As we begin this journey of the history of cinema, we need to understand how movies trick our brains into even understanding that a movie is a movie. In this...
TED-Ed
TED-Ed: How epic solar winds make brilliant polar lights - Michael Molina
Why do we see those stunning lights in the northern- and southernmost portions of the night sky? The Aurora Borealis and Aurora Australis occur when high-energy particles are flung from the Sun's corona toward the Earth and mingle with...
TED-Ed
TED-Ed: What is color? - Colm Kelleher
Have you ever wondered what color is? In this first installment of a series on light, Colm Kelleher describes the physics behind colors-- why the colors we see are related to the period of motion and the frequency of waves.
Crash Course
Exploring the Universe Crash Course Big History 2
In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...
Be Smart
Inside an ICE CAVE! - Nature's Most Beautiful Blue
Where do glaciers and icebergs get their beautiful blue color? This unique blue might be nature's most brilliant, and the color arises in a very special way thanks to some surprising interactions between light and water molecules. Who...
SciShow
Spacecraft Need New Heat Shields. Cue the Cuttlefish?
Scientists are always searching for new materials that maximize strength and thermal protection while also minimizing mass for space flight. So, when developing new heat shields, why are they looking to cuttlefish for inspiration?
TED-Ed
TED-Ed: Which animal has the best eyesight? | Thomas W. Cronin
The animal kingdom boasts an incredible diversity of eyes. Some rotate independently while others have squiggly-shaped pupils. Some have protective lids, others squirt blood. But which creature has the best sight? Which sees best in the...
TED-Ed
TED-Ed: Einstein's miracle year - Larry Lagerstrom
As the year 1905 began, Albert Einstein faced life as a "failed" academic. Yet within the next twelve months, he would publish four extraordinary papers, each on a different topic, that were destined to radically transform our...
SciShow Kids
Fireflies: Nature’s Baffling Blinkers Animal | Science for Kids
Have you ever wondered how fireflies twinkle and blink on lovely summer nights? Join Jessi and Squeaks at the fort to learn their secret!
TED-Ed
TED-Ed: How to see more and care less: The art of Georgia O'Keeffe | Iseult Gillespie
Feeling disconnected from creating art within classical conventions, artist Georgia O'Keeffe began experimenting with abstract drawings that defied easy classification. Using the shapes and rhythms of nature to capture her internal...
TED Talks
TED: The search for the invisible matter that shapes the universe | Chanda Prescod-Weinstein
The universe that we know, with its luminous stars and orbiting planets, is largely made up of elements we can't actually see -- like dark energy and dark matter -- and therefore don't fully understand. Theoretical physicist Chanda...
SciShow
4 Tiny Missions Answering the Biggest Questions in Astrophysics
The Astrophysics Pioneers program is funding four innovative new missions that read like a best-hits album of the most exciting astronomical frontiers: from galaxy evolution and exoplanets, to neutron star mergers and astroparticle physics.
SciShow
How the Electricity in Our Bodies Could Fight Cancer
One potential avenue for cancer treatment uses electricity not from any outside machine, but from within our own bodies.
SciShow
Your Cat Questions Answered! | Compilation
The kitties we let into our homes and hearts can have some strange and endearing behaviors, and we've made a fur-midable number of episodes about them! If you love cats, we've got a feline you're going to love this compilation!
SciShow
7 Amazing Origami-Inspired Inventions
Scientists and engineers are taking folding into the future!
MinutePhysics
Do Photons Cast Shadows?
This video is about two-photon (gamma-gamma) physics, and how photons can interact with each other - either mediated by a passing lepton, or gravitationally via lensing, or via vacuum fluctuation pair production of vertical particles...
SciShow
The Largest Electrical Current in the Universe
The information contained in this video may shock you!
SciShow
How We Make the Coldest Things in the Universe
If you want to make atoms THIS cold, you can’t just stick them in the freezer…you’ll need to take advantage of quantum mechanics!
Crash Course Kids
Look Who's Talking
Plants! We absolutely depend on them. Oxygen, food, and looking super nice to boot! But, plants have a lot more going on than meets the eye. How do we know that? Investigations and Experimentations!
Be Smart
A Slice of Pizza Science!
How does math keep a folded slice from drooping? And what does pizza have to do with the speed of light?