Instructional Video3:22
SciShow

Why Are Saturn’s Rings Younger Than Saturn?

12th - Higher Ed
Saturn's rings are younger than Saturn, and the most spectacular sight in the Solar System is also disappearing. How do we know? By running our finger through some cosmic dust.
Instructional Video10:38
SciShow

The Earth's "Boring Billion" Years Were Anything But

12th - Higher Ed
About 1.8–0.8 billion ago, the Earth went through a period known as the Boring Billion, where not a lot changed in terms of geology, evolution, or even the number of hours in a day. Some scientists call it “the dullest period in Earth’s...
Instructional Video2:36
MinuteEarth

Why Continents Are High

12th - Higher Ed
Lots of geological forces need to come together for continents to form, but they all require one ingredient: water.
Instructional Video2:51
MinuteEarth

How Do Abortion Pills Work?

12th - Higher Ed
You may have heard of "abortion pills" - here's what these medications are and what they do (and don't do).
Instructional Video2:41
MinuteEarth

What Happens When A Volcano Meets a Glacier?

12th - Higher Ed
Volcanoes might seem like an unstoppable force of nature - but there is at least one OTHER force on Earth that seems to be able to keep them down.
Instructional Video2:49
MinuteEarth

Why Weather Forecasts Suck

12th - Higher Ed
There are two types of rain, and one of them is almost impossible to forecast.
Instructional Video2:42
MinuteEarth

When 90dB is LOUDER than 120dB

12th - Higher Ed
We often use decibels, a measure of sound pressure, to describe how loud something is - but loudness is caused by how we perceive sounds, and the two often don't line up.
Instructional Video3:16
MinuteEarth

We Have No Idea Why

12th - Higher Ed
Most animals on earth are bioluminescent, but almost all of them live in the ocean - and scientists aren’t sure why.
Instructional Video3:12
MinuteEarth

The Plant You Don’t Have To Water

12th - Higher Ed
Some plants can drink water from the air - and that has some weird effects on the forests where they live.
Instructional Video2:58
MinuteEarth

The Couch Candy Protocol

12th - Higher Ed
How do you count things you don't know about?
Instructional Video2:28
MinuteEarth

Mushroom Wars

12th - Higher Ed
Two mushroom guilds with vastly different strategies are locked in competition for forest dominance.
Instructional Video2:40
MinuteEarth

There’s No Such Thing As “Warm-” Or “Cold-” Blooded

12th - Higher Ed
The concept of warm-blooded and cold-blooded animals is outdated because there are actually tons of different animal thermoregulation strategies.
Instructional Video3:48
MinuteEarth

How We Learned That Water Isn't An Element

12th - Higher Ed
For thousands of years, water was thought to be an element. That is, until some of the greatest chemists in the world managed to crack it open.
Instructional Video2:56
MinuteEarth

What if We Replaced Nuclear With Potatoes

12th - Higher Ed
Energy use can be confusing – I mean, how do you compare gasoline in your car to electricity piped to your house? That's why we made these things spud-tacularly simple.
Instructional Video2:30
MinuteEarth

Which Is Worse: Underpopulation Or Overpopulation?

12th - Higher Ed
The human population of the world will soon peak – and then decrease – thanks to a combination of two quickly changing economic and educational trends.
Instructional Video3:58
MinuteEarth

Why It's Impossible To Win a Nuclear War

12th - Higher Ed
Nuclear war is a terrifying existential threat, but we shouldn't only fear the blasts because the ensuing smoke is the real killer.
Instructional Video2:41
MinuteEarth

The 3 Reasons This Tree Has Lived 5000 Years

12th - Higher Ed
Methuselah’s environment lacks nutrients, water, and oxygen. In other words, it’s the perfect place to grow very very old.
Instructional Video3:33
MinuteEarth

When Was The Worst Time In History To Die?

12th - Higher Ed
By combining historical demography and epidemiology, we can (sort of) determine how people throughout history have died.
Instructional Video3:35
MinuteEarth

What Is The Best Shape For A Farm?

12th - Higher Ed
The shape of a farm can tell you a surprising amount about the land it's on and the people that use it.
Instructional Video2:18
MinuteEarth

Why Do Heart Attacks Cause *Arm* Pain?

12th - Higher Ed
When the brain receives pain from an internal organ, it often projects the pain in the wrong place because of the way sensory nerve paths converge
Instructional Video3:10
MinuteEarth

The Disease You Will Never Survive

12th - Higher Ed
A simple mis-folding in a certain brain protein causes a disease for which we have no cure.
Instructional Video2:30
MinuteEarth

The Weird Sex Lives of Bluegills

12th - Higher Ed
When it comes to the mating game, fish have some of the strangest ways of thwarting the competition.
Instructional Video4:07
MinuteEarth

Is Pregnancy A Disease?

12th - Higher Ed
We actually have no idea what a “disease” is.
Instructional Video3:08
MinuteEarth

How Caffeine Accidentally Took Over The World

12th - Higher Ed
Plants don't make caffeine just for us, so what DO they make it for?