SciShow
Why Can't Hand Sanitizer Kill The 0.01% of Germs?
New ReviewThere's a scientific reason most hand sanitizers claim they can kill 99.99 percent of germs, and there's only one way to deal with the rest. Correction: there is a typo in the credits. This episode was written by Roshni Bhatt Hosted by:...
TED Talks
TED: How a worm could save humanity from bad AI | Ramin Hasani
What if AI could think and adapt like a real brain? TED Fellow and AI scientist Ramin Hasani shares how liquid neural networks — a new, more flexible AI technology inspired by physics and living brains — could transform how we solve...
TED Talks
TED: The human cost of coal mining in China | Xiaojun "Tom" Wang
Xiaojun "Tom" Wang grew up in the Chinese province of Shanxi, the world's largest coal producer. Each year, more than a billion tons of coal are dug out of Shanxi's mountains, and the impacts are devastating — from massive landslides to...
SciShow
We Finally Know How Anesthesia Works
Even though doctors have been using general anesthesia for nearly 200 years, they haven’t really understood the details of how it temporarily shuts down your brain — until now.
SciShow
Plants That Keep Themselves Warm
Sometimes, plants do unexpected things. Like control their own body temperature.
SciShow
What the CRISPR Embryo Editing Study Really Taught Us
What did the recent study using the CRISPR gene editing technique actually entail, and what did we learn from it? Hosted by: Hank Green
SciShow
Some Mammals Can Just… Pause Pregnancy
We generally think of pregnancy as a continuous process, but scientists have recently discovered mechanisms that allow for certain mammals to put the development of a fetus on pause.
SciShow
Did We Find Longitude Thanks To A...Clock?
The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition....
SciShow
Why Don't Sleeping Bats Fall Down?
Bats sleep upside down, so how come they don’t fall? Turns out that they’ve got some unusual legs.
SciShow
What the CRISPR Embryo Editing Study Really Taught Us
What did the recent study using the CRISPR gene editing technique actually entail, and what did we learn from it?
Crash Course
The Aldol and Claisen Reactions: Crash Course Organic Chemistry
Organic chemistry is a great workout for your brain, and to keep its energy up, your brain needs glucose. To maintain blood glucose levels, our bodies go through a process called gluconeogenesis, which involves the important type of...
SciShow
Why Does Nature Make You Feel Better?
It’s not a huge surprise that nature is beneficial to our mental health. But why?
Bozeman Science
Thinking in Causation - Level 7 - Scale Mechanisms in Complex Systems
In this video Paul Andersen shows conceptual thinking in a mini-lesson on scale mechanisms within complex systems. TERMS: Cause and effect relationships - one event that gives rise to another event Complex systems - a system composed of...
PBS
The Black Hole Information Paradox
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...
SciShow
The Link Between Zebra Stripes and Sand Dunes | Natural Patterns
Stripes! Hexagons! They're everywhere! These patterns in nature might seem like aesthetic coincidences, but they are actually the result of physical process that show up again and again, even in otherwise unrelated phenomena.
Bozeman Science
Thinking in Causation - Level 4 - Cause, Mechanism and Effect
In this video Paul Andersen shows conceptual thinking in a mini-lesson on cause, mechanism and effect. TERMS: Cause - a thing that gives rise to an event Effect - an event Mechanism - the process underlying a phenomenon System - a set of...
SciShow
How We Feel Pain, From Peppers to Pressure
We didn't understand how our bodies processed pain until recently. From hot peppers to slamming your hand in a drawer, recent research suggests that pain from various sources can be processed in a surprisingly similar way.
Crash Course
Intro to Substitution Reactions - Crash Course Organic Chemistry
Substitution reactions can have really powerful effects, both good and bad, in our bodies. You might remember substitution reactions as displacement reactions from general chemistry, but (you guessed it!) in organic chemistry they’re a...
TED Talks
TED: Why the passport needs an upgrade | Karoli Hindriks
It's time to give paper passports a digital upgrade, says entrepreneur Karoli Hindriks. Looking to Estonia's technology-driven government for inspiration, she envisions a world where immigration is no longer hindered by bureaucracy and...
SciShow
These Baby Shrimp Really Pack a Punch!
Many species of mantis shrimp rely on their incredible punching abilities to stun their prey. But it turns out they don’t have to be mature mantis shrimp to start getting their punch on. And baby Philippine mantis shrimp can punch nearly...
SciShow
How Do You Sing in Falsetto?
High-pitched falsetto singing can show off a singer’s physical ability, because singing this way takes a lot of effort and some careful physics!
TED Talks
Krista Donaldson: The $80 prosthetic knee that's changing lives
We've made incredible advances in technology in recent years, but too often it seems only certain fortunate people can benefit. Engineer Krista Donaldson introduces the ReMotion knee, a prosthetic device for above-knee amputees, many of...
TED-Ed
TED-Ed: Could your brain repair itself? - Ralitsa Petrova
Imagine the brain could reboot, updating its damaged cells with new, improved units. That may sound like science fiction - but it's a potential reality scientists are investigating right now. Ralitsa Petrova details the science behind...
TED Talks
Richard Weller: Could the sun be good for your heart?
Our bodies get Vitamin D from the sun, but as dermatologist Richard Weller suggests, sunlight may confer another surprising benefit too. New research by his team shows that nitric oxide, a chemical transmitter stored in huge reserves in...