The real reason polio is so dangerous
AdultsHealthHistoryHumanBiologyScience... Explore what makes polio so dangerous, what is causing the 21st century resurgence of cases, and how we can eradicate the disease.
Why Do Butterflies Bother Being Caterpillars?
AdultsAnimalsLifeNatureEvolutionBiology... It seems wild that some animals basically trade in their bodies for new ones during their lifetime, but it's actually really common – and it makes a lot of sense.
We Only Discovered This 10 Years Ago
AdultsEducationHistoryBiologyEvolutionScience... Most living things on Earth need oxygen to survive, but scientists discovered a species of bacteria that uses oxygen totally differently from every other organism on Earth.
A Cute But Creepy Tiny Predator
YouthAnimalsEnvironmentNatureBiologyScience... Despite their tiny size, tarsiers are excellent nocturnal hunters. With large eyes that enable them to see well in the dark and advanced hearing combined with huge hands, catching prey is almost too easy.
Fabulous Food Chains
YouthEcologyEducationScienceBiologyFood... In this of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food Chains!
There Is Something Hiding Inside Earth
AdultsEducationScienceBiologySpaceNature... We’ve found a new planet, home to octillions of the most extreme beings living in the most absurd and deadly hellscape. In absolute darkness, crushed by the weight of mountains, starved of oxygen, cooked alive, bathed in acid, salt or radiation.
What Is Sickle Cell Disease?
YouthBiologyGeneticsScienceHealthEducation... You have around 35 trillion red blood cells moving around your body at all times. Typically they are rounded and flexible. What happens when they aren’t?
Groundbreaking chemist defines all of life in 2 words | Lee Cronin
AdultsLifePhilosophyScienceBiology... What is life, really? Despite our scientific advancements, we still don’t really know.
The Species That Broke Evolution?
AdultsHealthHistoryScienceBiologyEvolution... The ancestors of gars, horseshoe crabs and coelacanths looked almost the same as their modern relatives. Darwin called species like these “living fossils'' because they seem like they are evolutionarily frozen in time. But Darwin was wrong.
5 Ways CRISPR Is About to Change Everything
AdultsBiologyBiotechnologyHumanScienceHealth... CRISPR-based gene therapies are already changing healthcare for things like sickle cell disease. But CRISPR is bigger than just medicine, and it could revolutionize everything from food and agriculture to green energy fuels to plastics.
Why is it so dangerous to step on a rusty nail? - Louise Thwaites
AdultsBiologyHealthHumanScience... Explore how a toxin-producing bacterium causes tetanus, and how to identify its common symptoms and best prevention practices.
Why There Are No King Bees
AdultsAnimalsLifeNatureBiology... Beehives always have a queen, who is the mother of the entire hive. But have you ever wondered, what happened to the king, if there was ever any? Can a male bee become a king?