PBS
The Assassin Puzzle
Imagine you have a square-shaped room, and inside there is an assassin and a target. And suppose that any shot that the assassin takes can ricochet off the walls of the room, just like a ball on a billiard table. Is it possible to...
Bozeman Science
Kinetic Reaction Control
In this video Paul Andersen explains how a spontaneous process may take either the thermodynamically controlled or the kinetic controlled pathway. If the activation energy determines the path taken then the process is under kinetic...
SciShow
Hilde Mangold and the Organizer of Life | Great Minds
Experiments conducted by Hilde Mangold and Hans Spemann taught us how an animal develops from a small ball of cells into an organism with distinct, functioning parts. The work was a foundational contribution to the field of developmental...
PBS
What is Energy?
Energy is the most powerful and useful concept in all of physics, but what exactly is it?
3Blue1Brown
Snell's law proof using springs: Brachistochrone - Part 2 of 2
A clever mechanical proof of Snell's law.
SciShow Kids
Explore Saturn's Rings
There's a lot more to Saturn's rings than just looking awesome! Find out why!
SciShow
4 Weird Unsolved Mysteries of Math
There are lots of unsolved mysteries in the world of math, and many of them start off with a deceptively simple premise, like: What's the biggest couch you can slide around a 90-degree corner? Chapters MOVING SOFA PROBLEM 0:35 MOSER'S...
TED Talks
TED: Adventures of an asteroid hunter | Carrie Nugent
TeD Fellow Carrie Nugent is an asteroid hunter -- part of a group of scientists working to discover and catalog our oldest and most numerous cosmic neighbors. Why keep an eye out for asteroids? In this short, fact-filled talk, Nugent...
TED Talks
TED: The birth of virtual reality as an art form | Chris Milk
Chris Milk uses innovative technologies to make personal, interactive, human stories. Accompanied by Joshua Roman on cello and McKenzie Stubbert on piano, Milk traces his relationship to music and art -- from the first moment he...
TED-Ed
TED-Ed: Why the Sun could crash your internet | Fabio Pacucci
In September 1859, miners following the Colorado gold rush woke up to another sunny day. Or so they thought. To their surprise, they soon discovered it was actually 1am and the sky wasn't lit by the sun, but rather by brilliant drapes of...
SciShow
The Fastest Runaway Star in the Galaxy
Most stars orbit the center of the galaxy. Some stars don't. Learn what scientists think is going on, with Reid Reimers!
TED Talks
Daniele Quercia: Happy maps
Mapping apps help us find the fastest route to where we’re going. But what if we’d rather wander? Researcher Daniele Quercia demos “happy maps” that take into account not only the route you want to take, but how you want to feel along...
SciShow
3 Ways to Save Earth from an Asteroid
Hank gives us the skinny on three plans NASA scientists have come up with to save Earth from an asteroid impact. Hopefully we'll never have to use any of them.
SciShow
Megatsunamis Worlds Biggest Wave
Megatsunamis are not only much larger than your average tsunami, they also form under different conditions. Good news: they're extremely rare. Bad news: they might not be for long.
TED Talks
Carol Dweck: The power of believing that you can improve
Carol Dweck researches “growth mindset” — the idea that we can grow our brain's capacity to learn and to solve problems. In this talk, she describes two ways to think about a problem that’s slightly too hard for you to solve. Are you not...
SciShow
New Elements and Exploding Whales
Hank introduces you to the latest element to be created -- and explains why we make them in the first place -- plus the science of exploding whales. It's a thing, people.
TED Talks
TED: The inside story of the Paris climate agreement | Christiana Figueres
What would you do if your job was to save the planet? When Christiana Figueres was tapped by the uN to lead the Paris climate conference (COP 21) in December 2015, she reacted the way many people would: she thought it would be impossible...
TED Talks
TED: The untapped genius that could change science for the better | Jedidah Isler
Jedidah Isler dreamt of becoming an astrophysicist since she was a young girl, but the odds were against her: At that time, only 18 black women in the united States had ever earned a PhD in a physics-related discipline. In this personal...
TED-Ed
Can you cheat death by solving this riddle? | Shravan S K
You and your best friend Bill are the greatest bards in the kingdom— but maybe not the brightest. Your hit song has insulted the king and now you're slated for execution. Luckily, Death is a connoisseur of most excellent music and has...
TED-Ed
TED-Ed: Can you solve the virus riddle? - Lisa Winer
Your research team has found a prehistoric virus preserved in the permafrost and isolated it for study. After a late night working, you're just closing up the lab when a sudden earthquake hits and breaks all the sample vials. Will you be...
SciShow
Watch the Delta Aquarids, and Meet NASA's 'Aquanauts'
SciShow Space preps you for the Delta Aquarids, a meteor shower, and explains what makes them so unique. Plus, join "aquanauts" on one of NASA's least-known missions, a nine-day tour in its NEEMO undersea laboratory.
TED Talks
TED: You owe it to yourself to experience a total solar eclipse | David Baron
On August 21, 2017, the moon's shadow raced from Oregon to South Carolina in what some consider to be the most awe-inspiring spectacle in all of nature: a total solar eclipse. umbraphile David Baron chases these rare events across the...