SciShow
The Secret Behind Bioluminescent Bays
In a few special places around the world, the ocean lights up at night with countless tiny blue flashes thanks to some tiny organisms and science.
TED Talks
TED: Don't fear superintelligent AI | Grady Booch
New tech spawns new anxieties, says scientist and philosopher Grady Booch, but we don't need to be afraid an all-powerful, unfeeling AI. Booch allays our worst (sci-fi induced) fears about superintelligent computers by explaining how...
TED-Ed
TED-ED: The sonic boom problem - Katerina Kaouri
Objects that fly faster than the speed of sound (like really fast planes) create a shock wave accompanied by a thunder-like noise: the sonic boom. These epic sounds can cause distress to people and animals and even damage nearby...
Be Smart
CRISPR and the Future of Human Evolution
In part 4 of our special series on human ancestry and evolution, we look into the future. Now that genetic engineering tools like CRISPR allow us to edit our genes, how will that impact human evolution going forward? Are designer babies...
SciShow
Why Do Bats Carry So Many Dangerous Diseases?
Bats are amazing and not just because they're the only mammal that can fly! But they also carry a lot of diseases that are dangerous to humans, and while that is definitely not their fault, there is actually a lot we can learn from their...
SciShow
Human Experimentation: The Good, The Bad, & The Ugly
In the early days of the space race, agency researchers in Russia and at NASA really weren't sure all what would happen to an astronaut in space. They didn't know if a human mind could handle actually seeing Earth or what would happen to...
TED-Ed
TED-Ed: How smart are dolphins? - Lori Marino
Dolphins are one of the smartest animal species on Earth. In fact, their encephalization quotient (their brain size compared to the average for their body size) is second only to humans. But exactly how smart are they? Lori Marino...
SciShow
Thank Goodness for Bacterial Cannibalism
Some species of bacteria have a wicked survival strategy: killing members of their own species or a closely-related one. There’s a lot we don’t know about it, but it's possible that someday we could potentially harness that knowledge to...
SciShow
Fidelity Hormones, Contagious Behavior, and the Meat-Allergy Plague
This week's SciShow News finds Hank up to his elbows in weird disorders and strange behaviors, including a chemical that makes men stay faithful, new insights into what makes some behavior contagious, and the truth about a disease that...
Crash Course Kids
Feed Me: Classifying Organisms
FEED ME! In this episode of Crash Course Kids, Sabrina has a chat with us about what living things eat to get energy. What makes something an omnivore, or a carnivore, or an herbivore? And how do plants fit in to all of this? This first...
MinuteEarth
MinuteEarth Explains: Human Evolution
In this collection of classic MinuteEarth videos, we answer the question "why are you the way that you are?"
SciShow
Extreme Animal Milks You Probably Don't Want To Drink
All mammals produce milk, but you probably wouldn't want to dip your cookies in all of them.
SciShow
Animal Survival Skills: Poison Edition
We can purge our stomachs by vomiting when we consume something that our body thinks might be harmful, but what about animals that can't?
SciShow
Are Artificial Sweeteners Bad For You?
While scientists have debunked the notion that putting artificial sweeteners in your coffee will give you cancer, that doesn’t necessarily mean you should go hog wild with them.
TED-Ed
TED-Ed: The twins who tricked the Maya gods of death | Ilan Stavans
One day, twin brothers Junajpu and Ixb'alanke discovered their father's hidden ballgame equipment and began to play. Hearing their vigorous game, the lords of the underworld sent a messenger to challenge the boys to a match. Despite the...
TED-Ed
TED-ED: What's an algorithm? - David J. Malan
An algorithm is a method of solving problems both big and small. Though computers run algorithms constantly, humans can also solve problems with algorithms. David J. Malan explains how algorithms can be used in seemingly simple...
SciShow
Circadian Rhythm and Your Brain's Clock
Why do we sleep at night instead of during the day? In this episode of SciShow Hank talks about circadian rhythms, how they work, and how they regulate different processes in our bodies.
SciShow
How Do Pandas Exist?
Adorable, sure, but how are you alive?? Giant pandas present a conservation challenge like no other. Find out how the bears eke out an existence in the wild, and why they're proving so hard to save.
SciShow
Facts about Human Evolution
Hank brings you the facts, as they are understood by scientists today, about the evolution of humans from our humble primate ancestors. On the way to becoming Homo sapiens, game-changing evolutionary breakthroughs led to the development...
Crash Course
The End of Civilization (In the Bronze Age): Crash Course World History 211
In which John Green teaches you about the Bronze Age civilization in what we today call the middle east, and how the vast, interconnected civilization that encompassed Egypt, The Levant, and Mesopotamia came to an end. What's that you...
Crash Course
Why Human Ancestry Matters: Crash Course Big History 205
This week, Emily Graslie is teaching you about human ancestry and geneaology, how we got to be the species we are, and why that matters in our zoomed out look at Big History.
SciShow
Intersex Across the Animal Kingdom
Do you think animals can be divided into two biological sexes: female and male? Well, it's way more complicated that that!_
SciShow
7 Super Toxic U.S. Sites
Let's face it: Humans are pretty messy. Industrial processes like mining and manufacturing are important parts of keeping civilization going, but they all impact the environment. Sometimes that impact is particularly big and messy,...
TED Talks
TED: Why are these 32 symbols found in ancient caves all over europe? | Genevieve von Petzinger
Written language, the hallmark of human civilization, didn't just suddenly appear one day. Thousands of years before the first fully developed writing systems, our ancestors scrawled geometric signs across the walls of the caves they...