Why Don't We Have More Fossils?
AdultsArchaeologyEvolutionGeologyWhen you see a bunch of fossils in a museum, you might not think about how unlikely it is that they got there. But there's a lot of lucky dice rolls that landed that mastodon in the museum, and researchers are really motivated to find out what factors influence any organism's odds of fossilizing. Here's what we know and what we need to know.
This is the natural disaster to worry about
AdultsEnvironmentGeologyNatural DisastersThe strange natural material that reshaped the world.
What Would Happen If We Just Kept Digging?
AdultsEnvironmentGeologyPhysicsScienceThe deepest hole we've ever been able to dig is just 0.2 percent of the way to the center of the Earth. What would we encounter if we could drill all the way?
You've Never Heard of the World's Most Common Mineral
AdultsEducationScienceWorkWorldEnergyEnvironmentTechnologyGeologyBiologyThe most common substance in the world is literally IN the world. It's a mineral called bridgmanite, and it belongs to a class of minerals (called perovskites) that scientists are trying to use in the next generation of solar panels.
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!
What Happens if a Supervolcano Blows Up?
AdultsLifeNatureWorldScienceGeologyThe Earth is a gigantic ball of semi-molten rock, with a heart of iron as hot as the surface of the Sun. Titanic amounts of heat left over from its birth and the radioactive decay of trillions of tons of radioactive elements find no escape but up.
Why is Mount Everest so tall?
AdultsNatureWorldScienceGeologyAt 8,850 meters above sea level, Qomolangma, also known as Mount Everest, has the highest altitude on the planet. But how did this towering formation get so tall? Michele Koppes peers deep into our planet's crust, where continental plates collide, to find the answer.
Volcano Eruption
AdultsNatureWorldNatural DisastersGeologyEnvironmentAdditional information: Calbuco volcano has 2003 meters height (6572ft). The impressive ashes column you see in the video had a calculated height of 15km (9.3mil), from which you clearly see about 10km (6.2mil) before to get lost inside the atmosphere static zone where the ashes created a huge and dense cloud that now is traveling around the world.
How big is the ocean?
AdultsEcologyNatureEnvironmentOceanGeologyWhile the Earth's oceans are known as five separate entities, there is really only one ocean. So, how big is it? As of 2013, it takes up 71% of the Earth, houses 99% of the biosphere, and contains some of Earth's grandest geological features. Scott Gass reminds us of the influence humans have on the ocean and the influence it has on us.