Why the Hardest Rocks Can Be Easy to Break
AdultsEducationMathPhysicsScienceGeologySo, rocks are hard. But the scale we use to rank them, the Mohs scale, is only really good at quantifying that for one kind of hardness, and topaz is a perfect stone to talk about to explain that. And you can check it out in our SciShow Rocks Box subscription!
MinuteEarth Explains: Solar Eclipses
AdultsEducationScienceSpaceAstronomyOver the last year, we at MinuteEarth and MinutePhysics have had the privilege of working with NASA's Heliophysics Education Activation Team make a series of videos about the awesomeness of solar eclipses. Here they are, all seven of them!
The Real Killer Of The Dinosaurs
AdultsEducationHistoryScienceA ruthless murder was committed! Someone killed the dinosaurs and we have the murderer! Witnesses say that an Everest-sized asteroid hit Earth, devastated the planet and caused a mass extinction. A simple, fascinating and convincing explanation. Or… is it?
How the Most Expensive Swords in the World Are Made
AdultsConstructionEducationHistoryArtThis is a video about how Japanese samurai swords, aka katanas, are made – from the gathering of the iron sand, to the smelting of the steel, to the forging of the blade.
Why Do All YouTube Videos Look Alike?
AdultsCreativityEducationMediaInternet CultureScienceMany crustaceans from all sorts of starting points evolve to end up looking similar, likely due to outside pressures. That’s sort of like what happens with YouTube videos.
The Paradox of an Infinite Universe
AdultsEducationScienceSpacePhilosophyWhat is outside of the universe? We know that the universe had a beginning 14 billion years ago and that it has been expanding ever since.