SciShow
Mad Cow Disease Mostly Infects Teenagers
New ReviewWhen variant Creutzfeldt-Jakob disease, AKA mad cow disease, first emerged, researchers noticed a weird trend in exactly who got sick. Mot patients were diagnosed in their twenties, which would mean they got infected in their teens. Over...
SciShow
Why Elephants Rarely Get Cancer
New ReviewOne fun fact about elephants is that they're a lot less likely to get cancer than other animals (including us). Another fun fact is that unlike most warm-blooded animals, their testes are deep inside their bodies. It turns out, these two...
Crash Course
Mitosis & the Cell Cycle: How Cells Clone Themselves: Crash Course Biology #29
New ReviewWhat’s the life of a cell like? In this episode of Crash Course Biology, we’ll follow a cell’s life cycle, from its beginning as a shiny new cell all the way to division via mitosis. We’ll learn how our cells control this process, and...
Crash Course
Why Do Cells Need to Communicate?: Crash Course Biology #25
New ReviewEven though it might seem like our bodies are on autopilot, there is a whole lot happening inside us to keep things moving. In this episode of Crash Course Biology, we’ll learn that our cells are in constant communication, reminding each...
Crash Course
Cell Membranes: How Does Stuff Get Into Your Cells?: Crash Course Biology #24
New ReviewThe cell membrane is a protein-studded phospholipid bilayer that not only protects our cells, but also regulates what goes in and out. In this episode of Crash Course Biology, we’ll look at the structure of the bilayer, learn about its...
Crash Course
A Tour of the Cell: Crash Course Biology #23
New ReviewThe cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has advanced. In this episode of Crash Course Biology, we’ll take a look at the difference between...
MinuteEarth
Why Don't Snakes Poison Themselves?
Many animal species stuff themselves with toxic chemicals for protection, which forces them to use a handful of distinct strategies to avoid becoming victims of their own weapons.
MinuteEarth
Electrical Wires Made Of Bacteria
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.
TED-Ed
TED-Ed: This mushroom will kill you before you know what’s happening | Michael Beug
Humans have known about the toxicity of death cap mushrooms for millennia. Yet they continue to pose a significant threat to unsuspecting foragers and mushroom hunters throughout the world. Today, death caps are responsible for more than...
MinuteEarth
Epigenetics: Why Inheritance Is Weirder Than We Thought
Epigenetics: Why Inheritance Is Weirder Than We Thought
TED Talks
TED: 12 predictions for the future of technology | Vinod Khosla
Techno-optimist Vinod Khosla believes in the world-changing power of "foolish ideas." He offers 12 bold predictions for the future of technology — from preventative medicine to car-free cities to planes that get us from New York to...
SciShow
The Last Living Thing Won't Be a Cockroach
There are several ways the world could end, and scientists have given a lot of thought to what the last living thing will be.
SciShow
How Much of the Periodic Table is in YOU?
About 99.9% of your typical human body is made of just 11 elements from the periodic table. But hiding in that remaining 0.1% are some elements that do some very important jobs to keep you alive and healthy. Including some elements you...
SciShow
Scientists Let Bees Land in their Eyes
When it comes to a beverage menu, I don't usually want to see "tears" on the list. But these three animals do, including bees whose favorite drink is human tears!
TED Talks
TED: The miracle of organ donation — and a breakthrough for the future | Abbas Ardehali
Organ transplants save lives, but they come with challenges: every minute a healthy donated organ is on ice increases risk. And even if things go perfectly, rejection of the organ is still possible. Cardiothoracic surgeon Abbas Ardehali...
TED Talks
TED: Is alternative meat the recipe for a healthier planet? | Tao Zhang
A Chinese saying goes, "There's no pleasure in eating without meat." And the data backs that up: every year, China consumes 26 percent of the world's meat and 45 percent of its seafood — numbers that could grow alongside rising incomes....
SciShow
We Finally Made Synthetic Spider Silk
The ability to produce synthetic spider silk would give us bulletproof vests better than Kevlar, biocompatible sutures and wound dressings, and even space elevators. The problem is being able to make it in large amounts. One group may...
SciShow
You Have Four Ages
A person's chronological age doesn't tell us much about the health of their body's various systems. That's why scientists are beginning to study biological ages, and it turns out there may be a lot of them.
MinuteEarth
Which Will Kill You First?
The body can get a whole lot colder - but not a whole lot hotter - before we die. Why is that?
PBS
Our “Junk DNA” Is More Important Than We Once Thought
In the search for the genes that make us human, some of the most important answers were hiding not in the genes themselves, but in what was once considered genomic junk.
PBS
Giant Viruses Blur The Line Between Alive and Not
In 2003, microbiologists made a huge discovery. One that would force us to reconsider a lot of what we thought we knew about the evolution of microbial life: giant viruses.
PBS
How Blood Evolved (Many Times)
Blood is one of the most revolutionary features in our evolutionary history. Over hundreds of millions of years, the way in which blood does its job has changed over and over again. As a result, we animals have our familiar red blood....
Be Smart
Why Are So Many People Allergic To Food?
More people have food allergies than ever before. Peanuts, tree nuts, shellfish, eggs, and even milk… the list of possibly dangerous foods seems to get longer every day. But why do some people’s bodies have deadly reactions food? And why...
TED-Ed
TED-Ed: Which is better for you: "Real" meat or "fake" meat? | Carolyn Beans
In 2021, a survey of over 1,000 Americans found that nearly two-thirds had eaten plant-based meat alternatives in the past year. Many cited potential health and environmental benefits as their motivation. But are these alternative meats...