Why Can't I Grow More Teeth?
Adults Biology
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
Adults Biology
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
Adults Biology
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
Adults Biology
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
Adults Biology
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.
Neuroscientist debunks ‘lizard brain’ myth | Lisa Feldman Barrett
Adults Biology
Plato famously described the human psyche as two horses and a charioteer: One horse represented instincts, the other represented emotions, and the charioteer was the rational mind that controlled them.
What Biologists Do: Crash Course Biology
Adults Biology
A biologist’s natural habitat is anywhere questions about life are being asked—whether the subject is a nematode or a narwhal, a single cell, or a whole ecosystem.
How To Get Venom From The World's Deadliest Spider
Adults Biology
The deadliest is probably the funnel-web spider and its relatives. The Sydney funnel web spider (Atrax robustus) can kill a toddler in about 5 minutes and a 5-year-old in about 2 hours.
The science of super longevity | Dr. Morgan Levine
Adults Biology
Science can’t stop aging, but it may be able to slow our epigenetic clocks.
Are Life-Saving Medicines Hiding in the World’s Coldest Places?
Adults Biology
Could the next wonder drug be somewhere in Canada's snowy north? Take a trip to this beautiful, frigid landscape as chemist Normand Voyer explores the mysterious molecular treasures found in plants thriving in the cold.
What Are Plants Made Of? Crash Course Botany
Adults Biology
When you eat a salad for lunch, you’re digging into a giant pile of plant organs. That’s right—plants are made up of organs, only theirs follow a totally different set of rules from our own.
Your Body Killed Cancer 5 Minutes Ago
Adults Biology
Somewhere in your body, your immune system just quietly killed one of your own cells, stopping it from becoming cancer, and saving your life. It does that all the time.
You’re Not a Lab Mouse, but You Might Be a Wild Mouse
Adults Biology
The lab mice we use for genetic studies are not only closely related, but live out their whole lives in a sterile environment, so they don’t tell us everything we need to know about actual humans.
Why do we have crooked teeth when our ancestors didn’t?
Adults Biology
Explore the prevailing scientific theory of why crooked teeth and impacted wisdom teeth are recent developments in human evolution.
How to master your sense of smell
Adults Biology
Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks.
The man who lost his sense of touch
Adults Biology
Explore the science behind how your body and brain process different sensations like touch, pain, temperature, and spatial awareness.
Just How Good is Eagle Vision?
Adults Biology
In a remote part of Scotland, expert bird handler Lloyd Buck sets up a game of hide and seek for his golden eagle Tilly to test just how good her eyesight is.
The Best Way to Boost Your Immune System
Adults Biology
There is this idea floating around that what doesn’t kill you, makes you stronger.
You Can’t Actually Die Of Old Age
Adults Biology
Despite centuries of death records to the contrary, “dying of old age” is not medically possible; instead, it’s just a convenient catch-all.
The Biology Behind The Last of Us | WIRED
Adults Biology
The infection from HBO's The Last of Us is actually based on a real parasitic fungus. This fungus turns insects into zombies. The creators of the game and the show were inspired by zombie carpenter ants.
Your Immune System is More Dangerous than You Think
Adults Biology
There is this idea floating around that what doesn’t kill you, makes you stronger. That surviving a disease leaves you better off. And it seems to make sense because we have all experienced this.