SciShow
The Last Living Thing Won't Be a Cockroach
There are several ways the world could end, and scientists have given a lot of thought to what the last living thing will be.
SciShow
Your Fridge Isn’t Green, but It Could Be
Refrigeration and air conditioning are among the largest sources of carbon, and the refrigerants we use are greenhouse gases, too. But green refrigerants are on the way, from elastocaloric cooling to a method a bit like salting an icy road.
SciShow
The Earth's "Boring Billion" Years Were Anything But
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...
SciShow
Monsoons: Nature’s Air Purifiers
Monsoons are more than torrential rains. They come in wet and dry varieties, but both involve a lot of wind. And it turns out, those winds can help the Earth clean up some of the pollution mess humanity makes.
SciShow
The New Gel That Regrows Brains
A new healing gel helped mice regrow brain tissue after a stroke, and scientists suspect someone out there is producing a bunch of ozone-destroying CFCs in defiance of an international agreement! Hosted by: Hank Green
SciShow
10 Things We Didn't Know 100 Years Ago
In just the last century, we've made an astounding amount of scientific progress. And thanks to some of that progress, we can now share 10 of those discoveries with you in a video on the internet!
SciShow
How Studying Venus Saved Earth
Chlorofluorocarbons, or CFCs, seemed too good to be true when they were first created, and before long astronomers studying Venus' atmosphere discovered what could go wrong with this "miracle molecule."
SciShow
Early Galaxies Ran on Empty Gas Tanks
Many galaxies formed fast after the Big Bang, but about half of them suddenly stopped making new stars and it looks like this is literally because they ran out of gas. And with new instruments and techniques, we are now finding lost...
SciShow
Everything You Need to Know About Living on Mars
Scientists are constantly researching different ways people could potentially live on Mars. Start making your future Martian travel plans with this collection of videos about the unique challenges of putting humans on Mars.
SciShow
There’s Hope in the Latest Climate Report
We recently got an important update from the IPCC, the definitive source on the climate crisis. And while there's not a ton of good news, there are some bits of hope if we can ramp up our actions now.
SciShow
Tour the Solar System with SciShow Space
Did you know SciShow has a whole channel dedicated solely to space? Well, we hope you packed warm, cause we’re taking you on a tour through the solar system with these SciShow Space episodes!
MinuteEarth
How To Solve Every Global Crisis
Lots of global problems seem intractable, but there’s a formula for success that we can follow.
SciShow
A Pure and Restful Quiz Show | SciShow Quiz Show
Sally Le Page joins us on Quiz Show this week, where we celebrate the submission of her doctoral thesis with the most peaceful, relaxing questions we could devise, assuming you don’t count the volcanoes or screamed-at caterpillars
TED Talks
David Keith: A critical look at geoengineering against climate change
Environmental scientist David Keith proposes a cheap, effective, shocking means to address climate change: What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?
TED Talks
Kelly Wanser: Emergency medicine for our climate fever
As we recklessly warm the planet by pumping greenhouse gases into the atmosphere, some industrial emissions also produce particles that reflect sunshine back into space, putting a check on global warming that we're only starting to...
TED Talks
TED: 10 ways the world could end | Stephen Petranek
How might the human race end? Stephen Petranek lays out 10 terrible options and the science behind them. Will we be wiped out by an asteroid? Eco-collapse? How about a particle collider gone wild?
TED Talks
Sean Davis: Can we solve global warming? Lessons from how we protected the ozone layer
The Montreal Protocol proved that the world could come together and take action on climate change. Thirty years after the world's most successful environmental treaty was signed, atmospheric scientist Sean Davis examines the world we...
SciShow
The New Gel That Regrows Brains
A new healing gel helped mice regrow brain tissue after a stroke, and scientists suspect someone out there is producing a bunch of ozone-destroying CFCs in defiance of an international agreement!
Crash Course
What Does the Atmosphere Do Crash Course Geography
Much like a cell membrane, our atmosphere forms a protective boundary between outer space and the biosphere that allows for all life to exist on Earth’s surface. Today, we’re going to talk about its composition and layers (the...
SciShow
Great Minds We Lost in 2012
Hank pays tribute to some of the great scientific minds we lost in 2012, and then apologizes for some mistakes made in recent SciShow episodes.
PBS
Extinction by Gamma-Ray Burst
Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.
SciShow
Healing Ozone & Studying Ecstasy
The ozone appears to be healing itself but there's still plenty of research to be done to stay green! -And researchers are wanting to study MDMA.
Bozeman Science
Stratospheric Ozone
In this video Paul Andersen explains how stratospheric ozone protects humans from ultraviolet light. He explains how stratospheric ozone is formed when diatomic oxygen absorbs an ultraviolet photon and is split into two free oxygen...
SciShow
Terraforming: Can We Turn Mars Into Earth 2.0?
Are there ways to terraform Mars -- that is, make it habitable for humans? Some scientists think so. They have big plans, but they also face some big obstacles.