TED-Ed
Does Time Exist?
The simple question What time is it? may not be so simple after all. Learn about the history of measuring time and the debate on if time even exists with a short video that considers both classical physics and quantum physics when...
Crash Course
War: Crash Course Statistics #42
Discover the statistics war. The 42nd video in the Crash Course Statistics series introduces how statistics have proven valuable during wartime. The resource covers the use of statistics in breaking the German code, finding U-boats, and...
Crash Course
Statistics in the Courts: Crash Course Statistics #40
Innocence hangs by a probability. An intriguing video discusses how statistics affect daily life, specifically in the courts. Looking at three court cases spanning several hundreds of years, the resource recounts how errors in statistics...
SciShow
The Milky Way May Have a Disk of Black Holes
With better technology comes better information. An interesting video presentation discusses the evidence that makes scientists believe black holes exist in our galaxy. The narrator explains what a black hole is and how one forms.
Howard Hughes Medical Institute
Measuring Circadian Activity in Drosophila
How many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...
Veritasium
The Kg Is Dead, Long Live the Kg
Precision is imperative in science! Learn how science defines units of measure and how that changed for several units in 2018. A video lesson describes the history behind the definition of the kilogram, and the narrator then...
Veritasium
Five Firsts for Mars InSight
Scientists have been studying the surface of Mars for many years ... it's time to know a little something about its interior, too. The Mars Insight launched in November 2018 on a mission to study the happenings inside the most studied...
SciShow
Why Does Venus Spin Backwards?
Our planetary neighbor has some explaining to do! Scientists are mystified by the fact that Venus spins in the reverse direction of all other planets. A thoughtful video lesson explains different hypotheses as well as the science leading...
SciShow
How Can the Universe Be Flat?
Flat, positively curved, or negatively curved ... what is the true shape of the universe? Scientists use many indirect measurements to base their theories on the shape of the universe. Using an installment from the SciShow Space series,...
SciShow
How the US Launched Its First Satellite
Start to finish, the first satellite was an 84-day project. Follow the process in a video lesson presentation from the SciShow Space series. The narrator explains the decision-making process and structure of the satellite as well as the...
SciShow
How Many Galaxies Are There?
Could there really be over 200 billion galaxies? It turns out the number may be closer to two trillion galaxies! A video presentation discusses the existence of galaxies in the universe. The narrator explains how scientists make...
SciShow
The Oldest Planet Ever Discovered
The oldest known planet is more than 12 billion years old! A video lesson explains how unique the planet is and why it intrigues scientists. The instructor describes the recent discovery of the planet and the actual data collected that...
TED-Ed
Why Can't Some Birds Fly?
Back in the day, all birds had the ability to fly. Why would evolutionary adaptations take that away from some species? A video presentation discusses the cost of having the ability to fly and why that feature may not be ideal for...
TED-Ed
What’s the Smallest Thing in the Universe?
Quarks have some interesting features—including their names! Young scholars learn about up, down, strange, charming, bottom, and top quarks in an engaging video presentation. The narrator begins with an overview of molecules and atoms,...
TED-Ed
Why Is Meningitis so Dangerous?
Meningitis is scary and life-threatening—but preventable. Learn the science behind the disease and how to prevent contraction in a three-part lesson. Scholars first view a video describing the characteristics of meningitis and how people...
Howard Hughes Medical Institute
The Mammalian Molecular Clock Model
Animals don't read clocks, so how do they know when it is time for eating, sleeping, and other cyclical needs? Viewers watch an animation of the genes and the molecular clocks inside most mammals. They compare the difference in wild...
Howard Hughes Medical Institute
E. Coli Infection Strategy
While most strains of E. coli exist harmlessly inside our digestive tracts, some strains cause serious illness and even death. Watch the infection strategy of E. coli as it attacks a cell. The animation shares both what happens inside...
Howard Hughes Medical Institute
Bacterial Conjugation
Bacteria share the best gifts: genetic code offering drug resistance. As drug resistance becomes more common, scientists share how the process occurs with a brief animation. Viewers see a drug-resistant bacteria use conjugation to pass...
Howard Hughes Medical Institute
Recombination of Viral Genome
More than 144 sub-types of influenza A exist today. How is that possible? Scholars view an animation of a cell being attacked by two different strains of the flu. Then the strains mix, creating an entirely new third strain. The idea of...
SciShow
Found: Dozens of Ancient Cryovolcanoes on Ceres!
Scientists discovered multiple cryovolcanos over two billion years old! SciShow Space introduces the discovery of more than 30 cryovolcanoes on Ceres, some a relatively young two million years old. They then learn about #Flarewell and...
SciShow
Nuclear Pasta May Be the Strongest Material Ever
Do you ever feel like scientists have more fun naming new discoveries than actually finding them? Discover the fun they had while learning about the extremely scientific concepts of nuclear pasta, gnocchi, spaghetti, waffles,...
Howard Hughes Medical Institute
Genetic Engineering
No matter where you stand on the controversial topic of genetic engineering, the science that makes it possible is extraordinary. An animated video describes a process of genetic engineering involving bacteria. The quick...
SciShow
The 100-Year Mystery of the Diffuse Interstellar Bands
Sometimes in science mysteries remain mysteries for a long time! The discovery of diffuse interstellar bands happened nearly 100 years ago, yet it took until 2015 for scientists to understand a single band. Pupils learn about the...
Nature League
Life in Missoula, Montana - Field Trip
Many who enjoy YouTube science videos recognize Brit, the host, from her previous work on SciShow. Learn more about her many science degrees and why she started her show. Brit shares the area she where she currently lives and...