A Tour of the Cell: Crash Course Biology #23
AdultsBiologyEducationHumanScience The cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has advanced.
Everyone Was Wrong About Avocados - Including Us
AdultsAnimalsLifeNatureScienceBiology If you’re a fan of avocados, you might have heard that they only exist thanks to prehistoric creatures called giant ground sloths.
You Are Your Microbes
YouthBiologyScienceHealth Jessica Green and Karen Guillemin emphasize the importance of understanding the many organisms that make up each and every organism.
How Did Life Begin? (Evolutionary History): Crash Course Biology #16
AdultsEducationScienceSelfBiologyEvolution Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth.
Why Did It Take Us So Long?
AdultsLifeNatureScienceBiologyEcology We've long known that animal pollination is an important way plants reproduce on land, but we're only JUST finding out animals also pollinate plants underwater.
The best pregnancy test used to be this frog ... no, really - Carly Anne York
AdultsAnimalsNatureScienceBiologyHealth Dig into how African clawed frogs can help detect human pregnancy, and how their use in experiments had unintended consequences.
The World's Longest Beak
AdultsAnimalsMediaNatureBiology The sword-billed hummingbird has exclusive access to food that other birds simply cannot reach, but having such a long bill does have its drawbacks.
Why So Many Ladybugs Don't Look Like Ladybugs
AdultsAnimalsLifeNatureBiologyEvolution Ladybugs are red with black spots, right? Well, not always. There's a lot of genetic and evolutionary reasons that they can be different colors with wacky patterns.
Sense-Abilities | Weird But True!
KidsBiologyEducationHumanScience Watch the full episode of Weird But True, Season 1 Episode 11, "Sense-Abilities"! Did you know that when you smell something, molecules of whatever you’re smelling are actually entering your nose?!
Is Bigger Better?
AdultsAnimalsLifeNatureScienceBiology Elephants might be strong, but they are weak compared to ants because ants have certain advantages that allow them to outlift their larger competitors.
Why Can't I Grow More Teeth?
AdultsBiologyEducationHumanScience How come sharks get to have endlessly regrowing teeth when humans only get one set our entire lives? And how come some other mammals get to cheat the system? From elephants to baboons, we'll learn why teeth don't grow back.
How Species Make and Break Friendships
AdultsAnimalsHumanLifeScienceBiologyEcology Community ecology is the study of interactions between different species of living things, and lets ecologists examine the effects of predator-prey relationships, parasites, and mutually beneficial interactions. In this episode of Crash Course Biology, we’ll examine the myriad interspecies interactions with examples, see how keystone species impact their environment and explore how communities rebuild when they are disrupted, through the lens of the 1980 eruption of Mount St. Helens.