SciShow
Do We Need a Negative Leap Second?
Did you know that last year we had 28 of the fastest days ever recorded? Earth's rotation can be affected by a number of things, and scientists think we might someday need an unprecedented adjustment: deleting a second!
SciShow
10 Science Superlatives of 2012
This year's end News episode wraps up with nothing but superlatives: the biggest, oldest, first, last, smallest and hottest developments in science from 2012.
SciShow
Why Bacteria Don't Outweigh the Earth
This episode is brought to you by the Music for Scientists album! Check out “The Idea” music video here: • The Idea, written... . Given just a little time, bacteria could outgrow earth, so what's stopping them?
SciShow
A Kilogram Is Now a Kilogram—Forever | SciShow News
This week in SciShow News, there's a new kilogram in town, and we might be closer to understanding why people love coffee so much!
SciShow
The Erratic Behavior of Water
Water is one of the most abundant and important substances on Earth, so you think we'd know everything there is to know about it. Turns out, water is so much stranger and more complex than we ever thought! Join Olivia Gordon for a new...
SciShow
Will the Moon Ever Leave the Earth's Orbit?
Every year the moon’s orbit gets a little bigger and it moves just a little farther away. Should we worry about the Moon breaking free?
SciShow
Why Protons Are Still Such a Mystery to Scientists
Protons make up most of the regular matter int he universe, but we're still figuring out a few of their quirks... Or quarks. Join Hank Green and learn why protons are still so mysterious to scientists, and what we've discovered about...
SciShow
Why Do the Planets Orbit in the Same Plane?
While there is a little wiggle room, the planets in our solar system really are orbiting on mostly the same level. Why do they do that?
TED-Ed
TED-Ed: The battle that formed the universe | Fabio Pacucci
It's time for the biggest battle in the Universe: the Big Bang. In one corner is gravity— the force that brings all matter together. In the other is pressure— the force that can push matter away. Over the next several hundred thousand...
PBS
Why Nigeria has more HIV-positive infants than anywhere else
Preventing mother-to-child HIV transmission is considered one of the most basic goals for curtailing the AIDS epidemic, and Nigeria is struggling mightily. In our series The End of AIDS, William Brangham and Jason Kane examine why this...
PBS
What Survives Inside A Black Hole?
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...
Bozeman Science
Symbolic Representations
In this video Paul Andersen explains how the conservation of matter can be displayed with both symbolic representations and particulate drawings. A simple conservation of matter problem is also included.
3Blue1Brown
How colliding blocks act like a beam of light...to compute pi.
The third and final part of the block collision sequence.
MinutePhysics
The Unreasonable Efficiency of Black Holes
This video is about how efficient various reactions are at converting mass to energy (as we know from the Einstein mass-energy equivalence of E=mc^2). Antimatter is very efficient but it is not naturally-occurring. Chemical reactions...
Bozeman Science
AP Biology Practice 5 - Analyze Data and Evaluate Evidence
In this video Paul Andersen explains how scientists analyze data and evaluate evidence. He starts with a description of data and how it must be properly displayed. He then describes types of data in each of the four big ideas. He finally...
3Blue1Brown
Why do colliding blocks compute pi?
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
3Blue1Brown
How colliding blocks act like a beam of light...to compute pi: Colliding Blocks - Part 3 of 3
The third and final part of the block collision sequence.
TED Talks
What physics taught me about marketing - Dan Cobley
* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Physics and marketing don't seem to have much in common, but Dan Cobley is passionate about both. He brings these...
PBS
Anti-Matter and Quantum Relativity
Paul Dirac's insights into the nature of Quantum Mechanics laid the foundation for Quantum Field Theory and predicted the existence of anti-matter. Part 1 in our series on Quantum Field Theory.
3Blue1Brown
So why do colliding blocks compute pi? Colliding Blocks - Part 2 of 3
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
3Blue1Brown
So why do colliding blocks compute pi?
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
MinutePhysics
The Black Hole Tipping Point
This video is about the Schwarzschild radius of a black hole, (its "event horizon"), and how much mass and density is required to reach the point of no return where an object like a star, neutron star, red giant, etc will collapse into a...
PBS
The Phantom Singularity
Isaac Newton's Universal Law of Gravitation tells us that there is a singularity to be found within a black hole, but scientists and mathematicians have found a number of issues with Newton's equations. They don't always accurately...
PBS
The One-Electron Universe
Could it be that all the electrons in the universe are simply one, single electron moving back and forth through time?