3Blue1Brown
Limits, L'Hôpital's rule, and epsilon delta definitions | Essence of calculus, chapter 7
What are limits? How are they defined? How are they used to define the derivative? What is L'Hospital's rule?
SciShow
World’s Most Asked Questions How Old is Earth
People ask Google everything under the sun. One of the most commonly searched questions in the world is “How old is Earth?” SciShow has the answer!
SciShow
How 5G Cell Service Could Hurt Weather Forecasts
Good weather forecasts save lives, but scientists are worried that 5G transmissions could drown out frequencies measured by weather satellites, setting weather forecasts back decades.
TED Talks
TED: 5 ethical principles for digitizing humanitarian aid | Aarathi Krishnan
Over the last decade, humanitarian organizations have digitized many of their systems, from registering refugees with biometric IDs to transporting cargo via drones. This has helped deliver aid around the world, but it's also brought new...
SciShow
The Mystery of the Black Diamond
There are still lots of unsolved mystery about carbonados ("black diamonds"), and geologists even think those mystery rocks come from outside of Earth.
MinuteEarth
MinuteEarth Explains: Space
In this collection of classic MinuteEarth videos, we travel beyond Earth and explore some of our favorite mysteries about space.
SciShow
Why Does Plane Food Taste So Bad?
We’ve all heard the jokes about airline food, but have you ever wondered why most everyone in the world hates it so much?
SciShow
What Is Night Blindness?
Night blindness is real, and it can be caused by any number of things that affect the complicated mechanics of your vision.
SciShow
Dinosaurs Probably Weren't Cold-Blooded, According to Eggshells
Scientists can find answers in some pretty unusual places, and recently they found some evidence that dinosaurs weren't cold-blooded by looking at... eggshells?
SciShow
A Raindrop Is a Raindrop, Even When It’s Metal
On earth it rains water, on the exoplanet WASP-76b, it rains liquid iron, but no matter what planet you're on, the rain drops there have a lot more in common than you might think.
TED-Ed
TED-Ed: Can you solve the secret sauce riddle? | Alex Gendler
One of the top chefs from Pasta Palace has been kidnapped by operatives from Burger Bazaar hoping to learn the location of their secret sauce recipe. Little do they know that a third party— Sausage Saloon— has sent you, their top spy, to...
TED-Ed
TED-Ed: Why does your voice change as you get older? - Shaylin A. Schundler
The human voice is capable of incredible variety and range. As we age, our bodies undergo two major changes which explore that range. So how exactly does our voice box work, and what causes these shifts in speech? Shaylin A. Schundler...
SciShow
How Earth Recycled a Mountain Range
Mountains take can take billions of years to form, but the Adirondack Mountains got ahead by recycling itself.
SciShow
6 of the Coolest Things We've Found in Amber
Amber is amazing stuff! It can preserve organisms whole, and essentially freeze them in time, and the specimens we’ve found in it so far range from amazing to downright bizarre. Here are six of the coolest things we’ve found trapped in...
3Blue1Brown
Limits, L'Hopital's rule, and epsilon delta definitions: Essence of Calculus - Part 7 of 11
What are limits? How are they defined? How are they used to define the derivative? What is L'Hospital's rule?
Crash Course
Early Computing: Crash Course Computer Science
Hello, world! Welcome to Crash Course Computer Science! So today, we’re going to take a look at computing’s origins, because even though our digital computers are relatively new, the need for computation is not. Since the start of...
SciShow
The Ups and Downs of Air Turbulence
Ever wonder why sometimes the airplane you're flying on decides to lurch suddenly and cause your little baggie of peanuts to spill all over the place? Join Hank on SciShow today as he explores the in and outs and the ups and downs of...
TED-Ed
Meet the bluefin tuna, the toughest fish in the sea | Grantly Galland and Raiana McKinney
What's as big as a polar bear, swallows its prey whole, and swims at forty miles an hour? It's not a shark or a killer whale... it's the Atlantic bluefin tuna— the largest and longest-lived of the 15 tuna species. Its unique set of...
TED-Ed
TED-ED: Debunking the myths of OCD - Natascha M. Santos
There's a common misconception that if you like to meticulously organize your things, keep your hands clean, or plan out your weekend to the last detail, you might be OCD. In fact, OCD (Obsessive Compulsive Disorder) is a serious...
SciShow
How Shoulders Took Over the World (ft. Emily Graslie!)
Emily Graslie joins us to share the wonder of how shoulders, humble as they may be, have played a huge role in the evolution of mammals the world over. Thanks to the Museum of Comparative Zoology at Havard and The Field Museum for...
TED Talks
Marisa Fick-Jordan: The wonder of Zulu wire art
In this short, image-packed talk, Marisa Fick-Jordan talks about how a village of traditional Zulu wire weavers built a worldwide market for their dazzling work.
PBS
How Asteroid Mining Will Save Earth
The days of oil may be numbered, but there's another natural resource that's never been touched, Asteroids.
TED-Ed
TED-ED: Do we really need pesticides? - Fernan Perez-Galvez
Annually, we shower over 5 billion pounds of pesticides across the Earth to control insects, unwanted weeds, funguses, rodents, and bacteria that may threaten our food supply. But is it worth it, knowing what we do about the associated...
Crash Course
Measures of Spread - Crash Course Statistics
Today, we're looking at measures of spread, or dispersion, which we use to understand how well medians and means represent the data, and how reliable our conclusions are. They can help understand test scores, income inequality, spot...