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.
The #1 way to strengthen your mind is to use your body | Wendy Suzuki
AdultsBiologyHealthHumanWellnessMental Health... Exercise gives your brain a “bubble bath of neurochemicals,” says Wendy Suzuki, a professor of neural science.
Blindness Isn't a Tragic Binary — It's a Rich Spectrum | Andrew Leland | TED
AdultsBiologyHumanScienceDisabilityHealthSociety... When does vision loss become blindness? Writer, audio producer and editor Andrew Leland explains how his gradual loss of vision revealed a paradoxical truth about blindness -- and shows why it might have implications for how all of us see the world.
The Reason Why Cancer is so Hard to Beat
AdultsBiologyHumanScienceHealth... An undead city under siege, soldiers and police ruthlessly shooting down waves of zombies that flood from infected streets, trying to escape and infect more cities. This is what happens when your body fights cancer, more exciting than any movie.