SciShow
Why Does Everything Decay Into Lead
If you look at a copy of the periodic table, you might notice that basically every element after lead is labelled as radioactive. And the vast majority of those elements wind up decaying into some version of lead eventually. But why is...
PBS
How We Know The Earth Is Ancient
In astronomy we talk about billions of years like it’s no big deal. But how can we be sure about timescales so far beyond the capacity for human intuition? Our discovery of what we now call deep time is very recent - as recent as our...
PBS
Are there Undiscovered Elements Beyond The Periodic Table?
Adamantium, bolognium, dilithium. Element Zero, Kryptonite. Mythril, Netherite, Orichalcum, Unobtanium. We love the idea of fictional elements with miraculous properties that science has yet to discover. But is it really possible that...
SciShow
Does the Food Chain Stop At Jellyfish?
Jellyfish aren't the most nutritious animals in the ocean. Yet sea turtles and many other organisms get their nutrition from almost nothing else. Here's why they don't totally starve to death.
SciShow
Why Carbon Dating Might Be in Danger
Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.
SciShow
What Happens to Your Body if You Drink Heavy Water?
What is heavy water, and is it safe to drink? Heavy water, or deuterium oxide, has some pretty important scientific applications. But what would happen to your body if you actually drank it? Hosted by Hank Green.
SciShow
What Really Happened the First Time We Split a Heavy Atom in Half
When scientists first split the atom, they didn’t realize what they’d done until physicist Lise Meitner figured out they had discovered what we now call nuclear fission.
SciShow
How to Date a Dead Thing
SciShow explains radiocarbon dating, the best way to date a dead thing!
SciShow
DNA and Dung Beetles
Chapters View all CARL LINNAEUS 1:24 20% OF KNOWN SPECIES 1:38 NOT 100 MILLION 1:51 DEEP SEA LOBSTERS 2:25 VENEZUELAN SNAIL 2:28 FISH COUNT 2:39
SciShow
Strontium: It Knows Where You've Been
Your teeth contain traces of strontium isotopes that can reveal where you lived while they were forming.
SciShow
How Kodak Discovered Radioactive Rain
The Trinity Test had some unexpected consequences, including the creation of radioactive rain found hundreds of miles away from the test site.
TED Talks
TED: Nuclear power is our best hope to ditch fossil fuels | Isabelle Boemeke
Nuclear power is one of the safest, cleanest forms of energy -- yet to most people, it might not feel that way. Why is that? Isabelle Boemeke, the world's first nuclear energy influencer and creator of the social media persona Isodope,...
Bozeman Science
Mass Spectrometry
In this video Paul Andersen explains how a spectrometer was used to identify the presence of isotopes. This modified Dalton's original atomic theory because atoms of the same element had different masses. The functional parts of a mass...
SciShow
The Manhattan Project
Some of the greatest advances in science have come from humanity's more destructive impulses. This is not the fault of science - when we discover powerful truths about the universe it's up to us to decide how to use them because they can...
SciShow
Why Carbon Dating Might Be in Danger
Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.
SciShow
What Happens If You Drink a Glass of Heavy Water?
Heavy water, or deuterium oxide, has some important scientific applications, but let's say you're reeeeaallly thirsty... is it safe to drink?
SciShow
Studying Supernovas From the Bottom of the Ocean
Stars blowing up is a surprisingly common occurrence, but who would have thought to search the bottom of the ocean if you were trying to study them?!
Curated Video
Protons, Neutrons and Electrons Explained - what's the difference?
In this video, we'll explore the differences between the proton, neutron, and electron. We'll learn about their characteristics, and how they interact with matter. This video is perfect for anyone who wants to learn more about subatomic...
Curated Video
Isotope
Atoms of the same element with different numbers of neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Isotopic mass
The mass of 1 atom of a specific isotope of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
Curated Video
Radioactivity
The emission of particles as a result of the spontaneous decay of atomic nuclei. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
Atomic weight
The average mass of atoms of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
Curated Video
Heavy Water
Why did allied soldiers in World War Two embark on a dangerous mission to stop the Nazis using heavy water? Chemistry - Atoms And Bonding - Learning Points. Atoms that have the same number of protons and electrons but different numbers...
Curated Video
We Are All Made of Stars
Discover how elements are formed in the centre of stars, and how some elements are formed in even more spectacular conditions. Chemistry - Periodic Table - Learning Points. Most elements were created in space. At the beginning of the...