SciShow
Chernobyl's Radioactive Wild Boar Paradox
After the Chernobyl Disaster, researchers have been studying the movement of radioactive contamination all over central Europe. Fortunately, that radioactive contamination is decreasing in just about every living thing, except for one...
SciShow
How Do We Know How Old the Earth Is?
In the wake of World War 2, Clair Patterson embarked on a scientific quest to find out how old the Earth really is. His hard work paid off, but it also revealed a modern danger.
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...
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.
TED-Ed
TED-Ed: Why neutrinos matter - Silvia Bravo Gallart
Elementary particles are the smallest known building blocks in the universe-and the neutrino is one of the smallest of the small. These tiny neutrinos can tell us about the furthest reaches and most extreme environments of the universe...
SciShow
Should You Worry About Antarctica's New, Massive Iceberg?
How concerned are scientists about the Larson C ice shelf calving its most recent iceberg? Archeologists have also found new evidence that confirms earlier dates for the existence of ancient Australian humans.
SciShow
Who Melted the Earth
Hank clarifies, corrects, and generally straightens out the origins of the terrific heat inside the Earth. It's not only from the collisions and pressure that date back to Earth's formation, it also involves the transport of heavier...
SciShow
SciShow Quiz Show: Weird Water Creatures & Spontaneous Combustion!
SciShow Quiz Show is back, with familiar faces Hank Green and Caitlin Hofmeister battling it out over questions on water, fire, and computer science!
SciShow
Statistical Paradoxes with MinutePhysics - SciShow Talk Show
Henry Reich of MinutePhysics and MinuteEarth talks about statistical paradoxes and quantum entanglement. Afterwards, Jessi from Animal Wonders joins the show with two Red-Footed Tortoises!
SciShow
The Quantum Theory that Connects the Entire Universe
Quantum mechanics is weird and seems a bit...complicated. But understanding it can help us to understand the universe.
Bozeman Science
Atomic Nucleus
In this video Paul Andersen explains how the structure of the nucleus influences the properties of the atom. The number of the protons determines the kind of element. Isotopes are formed when the number of protons remain the same but...
SciShow
Are Modern Humans Really Older Than We Thought?
Until recently, fossil evidence for modern humans has only gone back 200,000 years. A new discovery in Morocco and thermoluminescence dating may help extend that beyond 300,000 years. Chapters View all Homo sapiens 0:09...
Bozeman Science
Radiocarbon Dating
Mr. Andersen explains how carbon-14 dating can be used to date ancient material. The half-life of radioactive carbon into nitrogen is also discussed.
Bozeman Science
Conservation of Nucleon Number
In this video Paul Andersen explains how the nucleon number and charge is conserved in all nuclear reactions and radioactive decay. Fission, fusion, alpha decay, beta decay, and gamma decay all conserve the number of neutrons and...
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
The Real Philosopher's Stone: Turning Lead into Gold
With scientists’ efforts and their creativity, we finally found “the real philosopher’s stone.” That's right, we can now turn lead into gold... a little bit.
Bozeman Science
The Rate Constant
In this video Paul Andersen describes the characteristics of the rate constant in chemical reactions. The rate constant is highly variable in reactions and must be determined experimentally. The rate constant is dependent on both...
Bozeman Science
Elementary Reactions
In this video Paul Andersen explains that elementary reactions are steps within a larger reaction mechanism. Colliding molecules require sufficient energy and proper orientation to break bonds and form new bonds. A unimolecular...
Bozeman Science
Radiation and Radioactive Decay
Mr. Andersen explains why radiation occurs and describes the major types of radiation. He also shows how alpha, beta, and gamma radiation affect the nucleus of a radioactive atom. Nuclear equations are also discussed.
SciShow
How Radioactivity Makes Planets Habitable | Space News
The perfect balance of radioactive elements inside planets like ours might make it habitable, and researchers are challenging some ideas about how Mars is losing its water.
Crash Course
Einstein's Revolution: Crash Course History of Science
There was physics before Einstein in the same way that there was biology before Darwin. Einstein didn’t just add some new ideas to physics. And he didn’t just add a unifying framework for doing physics, like Newton. Einstein took what...
PBS
The Many Worlds of the Quantum Multiverse
Is our universe a definitive single reality or is it merely one within an infinitely branching multiverse?
Bozeman Science
PS1C - Nuclear Processes
Paul Andersen explains three major nuclear processes; fusion, fission, and decay. He begins with a brief discussion of the four fundamental forces in nature. He the explains how nuclei can be combined in fusion, divided through...
Bozeman Science
Half-Life and Radioactive Decay
In this video Paul Andersen explains how a radioactive nuclei can decay by releasing an alpha, beta, or gamma particle. The exact moment of decay for each nuclei can not be determined but probability is useful in predicting the...