SciShow
Blue Whales and The Smartphone Morality Experiment
Hank shares news about the biggest animal in the history of ever -- blue whales -- and explains the lessons learned in a new study of human morality, using smartphones.
Bozeman Science
Electric Field Strength
In this video Paul Andersen explains how the electric field strength is directly related to the amount of charge that generates the field.
PBS
How Do You Measure the Size of the Universe?
The universe is HUGE. But, there is only so much of the universe we can ACTUALLY see, and if we wanted to measure that FINITE space, how would we do it? A gigantic ruler? One really long car ride? Or maybe it's something even more...
TED-Ed
TED-ED: From the top of the food chain down: Rewilding our world - George Monbiot
Our planet was once populated by megafauna, big top-of-the-food-chain predators that played their part in balancing our ecosystems. When those megafauna disappear, the result is a "trophic cascade," where every part of the ecosystem...
SciShow
3 of the Universe’s Most Extreme Galaxies
With so many galaxies in the universe, some are bound to astound us. Here are three of the most extreme galaxies scientists have discovered so far.
MinuteEarth
Why So Many Meteorites Come From The Same Place
Because of space physics, one faraway asteroid is likely the progenitor of almost a third of all the meteorites on Earth. ___________________________________________ If you want to learn more about this topic, start your googling with...
SciShow
9 of the Weirdest Sperm Adaptations
You probably have a vague idea of what sperm does, but not all sperm are created equal, and some have even developed unique adaptations to get where they're going.
Crash Course
Distances
How do astronomers make sense out of the vastness of space? How do they study things so far away? Today Phil talks about distances, going back to early astronomy. Ancient Greeks were able to find the size of the Earth, and from that the...
Crash Course Kids
Over (to) The Moon
Sabrina gets a new set in this episode of Crash Course Kids. Do you want to be an astronaut? Would you like to someday walk on the moon? Well, you better learn a little about gravity so you can escape from Earth and head into space....
Bozeman Science
Bacteria
Paul Andersen describes the defining characteristics of the domain Eubacteria. He begins with a quick description of the phylogeny of bacteria and horizontal gene transfer. He then surveys the structures of a bacteria; nucleoid region,...
Bozeman Science
Wave-Particle Duality of Light
In this video Paul Andersen explains how light can be treated as both a particle and a wave. Physicists use scale to determine which model to use when studying light. When the wavelength of light is equivalent to the size of the object...
SciShow
Can You Make an Accurate Map?
Earth is not flat. So, representing it on a flat surface can be challenging and always requires compromises.
TED-Ed
TED-Ed: How to organize, add and multiply matrices - Bill Shillito
When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding,...
Crash Course
The Normal Distribution - Crash Course Statistics
Today is the day we finally talk about the normal distribution! The normal distribution is incredibly important in statistics because distributions of means are normally distributed even if populations aren't. We'll get into why this is...
MinuteEarth
MinuteEarth Explains: Cats vs Dogs
In this collection of classic MinuteEarth videos, we learn more about the planet’s two favorite pets.
SciShow
The Oort Cloud Believe it or Not
Learn about the Oort Cloud with host Reid Reimers on this episode of SciShow Space!
SciShow
The Asteroid Belt: Not What You Think!
Buckle up for a trip to the asteroid belt -- though it's not nearly as dangerous out there as you might think. But there's a LOT waiting to be discovered, including some crucial clues about the formation of the solar system itself.
Bozeman Science
Diffraction Effects
In this video Paul Andersen explains how diffraction can be affected by the size of the wavelength. When waves pass through an opening or move around an obstacle a shadow region is created. The size of the shadow zone will decrease as...
TED-Ed
TED-Ed: Is there a limit to technological progress? - Clement Vidal
Many generations have felt they've reached the pinnacle of technological advancement. Yet, if you look back 100 years, the technologies we take for granted today would seem like impossible magic. So - will there be a point where we reach...
Bozeman Science
Electromagnetic Radiation
In this video Paul Andersen details the waves in electromagnetic radiation. There is an inverse relation between the wavelength and frequency of electromagnetic waves. Electromagnetic radiation includes gamma rays, x-rays, infrared...
Bozeman Science
Wave Diffraction
In this video Paul Andersen explains how waves will diffract (or bend) around an obstacle or while traveling through and opening. Diffraction will be maximized when the size of the opening or obstacle matches the wavelength.
PBS
What Happens At The Edge Of The Universe?
Lots of people believe the Universe is infinite, but there's a good possibility that might not be the case. Which means that there would be an actual edge of the Universe. What happens at that edge? Is there a restaurant?
Bozeman Science
Genetic Drift
Paul Andersen describes genetic drift as a mechanism for evolutionary change. A population genetics simulator is used to show the importance of large population size in neutralizing random change. The near extinction of the northern...
SciShow Kids
What Is the Sun?
Squeaks can't sleep because the sun is too bright, and Sam the Bat stops by to talk about what makes the sun so special DCI: ESS1.A: Patterns of the motion of the sun, moon, and stars in the sky can be observed, described, and predicted.