TED-Ed
TED-Ed: A day in the life of an ancient Celtic Druid | Philip Freeman
As the sun rises in 55 BCE, Camma lays two pigeons on the altar at the center of her village. She wrings the birds' necks and cuts them open to examine their entrails for divine messages. Camma is a druid. She conducts religious rites,...
SciShow
Great Minds: Katherine Johnson, Human Computer
In the early days of spaceflight, if NASA needed to plot a rocket's path or confirm a computer's calculations, they knew who to ask: Katherine Johnson.
Be Smart
Can Coral Reefs Survive Climate Change? #OursToLose
The #OursToLose YouTube campaign sheds light on climate change and the environment.
SciShow
Tabby's Strange Star Just Got Stranger
It's been a year since astronomer Tabetha Boyaijan found strange signals coming from a star called KIC 8462852, aka Tabby's Star. Now, new research shows that it's even stranger than we thought. Plus, good news from spaceflight company...
TED Talks
TED: How to land on a comet | Fred Jansen
As manager of the Rosetta mission, Fred Jansen was responsible for the successful 2014 landing of a probe on the comet known as 67P/Churyumov-Gerasimenko. In this fascinating and funny talk, Jansen reveals some of the intricate...
SciShow
The Majestic Grolar Bear
Although polar bears and grizzly bears aren't all that similar and are definitely separate species, they can interbreed and create fertile offspring in the wild. Hank brings us the story of these misfit bears, which he likes to call...
SciShow
Cutting Beef Could Reduce Emissions. No, Like, a Lot
Switching from beef to a specific kind of vegetarian protein just once a week could have huge environmental benefits, according to a study out this week in Nature. And, in a study in Nature Communications, researchers in the US have...
SciShow
The Ridiculous Reasons It's Hard to Measure Sea Level
From problems with the moon, to the lumpiness of earth, sea levels aren't quite as exact as we have them figured out to be.
Curated Video
Globalization II - Good or Bad?: Crash Course World History
In which John asks whether globalization is a net positive for humanity. While the new global economy has created a lot of wealth, and lifted a lot of people out of poverty, it also has some effects that aren't so hot. Wealth disparity,...
TED Talks
TED: Portraits that transform people into whatever they want to be | uldus Bakhtiozina
With her gorgeous, haunting photographs, artist uldus Bakhtiozina documents dreams, working with daily life as she imagines it could be. She creates everything in her work by hand -- from costumes to stages -- without digital...
SciShow
Why It's So Hard to Land on Mars
We’ve sent more spacecraft to Mars than any other planet, but around half of the probes that have ever attempted to explore Mars have either crashed or disappeared.
TED Talks
Lawrence Lessig: We the People, and the Republic we must reclaim
There is a corruption at the heart of American politics, caused by the dependence of Congressional candidates on funding from the tiniest percentage of citizens. That's the argument at the core of this blistering talk by legal scholar...
SciShow
SpaceX Reused a Rocket!
This week SpaceX accomplished a first in the history of spaceflight: They reused a rocket big enough to send things into orbit!
TED-Ed
TED-Ed: The Norse myth that inspired "The Lord of the Rings" | Iseult Gillespie
The dwarves were master craftspeople. One dwarf, Andvari, forged marvelous creations. He often took the form of a fish and, one day, he swam to the land of the water nymphs, who guarded mounds of gold. When the nymphs laughed at his...
SciShow
Why Lizards Don't Run Marathons
Lizards tend to scurry around in short bursts rather than running long distances, and the reason why might be nearly as old as life on land.
TED-Ed
TED-Ed: Where will you be able to live in 20 years? | Carol Farbotko and Ingrid Boas
Humanity has always adapted to changing weather and moved to regions that best support cultural lifestyles and livelihoods. However, the rise in extreme weather is endangering coastal communities, and even for those with the resources to...
TED Talks
Ron Finley: A guerrilla gardener in South Central LA
Ron Finley plants vegetable gardens in South Central LA -- in abandoned lots, traffic medians, along the curbs. Why? For fun, for defiance, for beauty and to offer some alternative to fast food in a community where "the drive-thrus are...
TED Talks
Lord Nicholas Stern: The state of the climate — and what we might do about it
How can we begin to address the global, insidious problem of climate change — a problem that's too big for any one country to solve? Economist Nicholas Stern lays out a plan, presented to the UN's Climate Summit in 2014, showing how the...
TED Talks
TED: How to restore a rainforest | Willie Smits
By piecing together a complex ecological puzzle, biologist Willie Smits believes he has found a way to re-grow clearcut rainforest in Borneo, saving local orangutans — and creating a thrilling blueprint for restoring fragile ecosystems....
SciShow
How Ultra-Black Fish Disappear into the Deep
Deep into the ocean even the slightest glimmer give you away. Which is why some fish have evolved to be so dark that they absorb any light that hits them.
Crash Course
Why are People Moving to Cities? Crash Course Geography
According to the UN, people living in urban places now outnumber those in rural areas — which is a pretty new phenomenon for many parts of the world. So today, we’re going to discuss factors that have led to this shift in populations...
TED Talks
Edith Widder: Glowing life in an underwater world
Some 80 to 90 percent of undersea creatures make light -- and we know very little about how or why. Bioluminescence expert Edith Widder explores this glowing, sparkling, luminous world, sharing glorious images and insight into the unseen...
TED Talks
Taryn Simon: The stories behind the bloodlines
Taryn Simon captures the essence of vast, generation-spanning stories by photographing the descendants of people at the center of the narrative. In this riveting talk she shows a stream of these stories from all over the world,...
SciShow
What Will Earth’s Next Supercontinent Be?
In about 200 million years, Earth is due for another supercontinent. What exactly that supercontinent will look like, though, depends on a lot of geological factors, and is harder to guess at than you might think! Today, SciShow walks...