SciShow
How Safe Are Food Preservatives, Really?
New ReviewYou may have seen some unpronounceable words or weird abbreviations in your food's ingredient lists before, but have you ever wondered why that stuff gets added into your snacks? It's not just for fun, those preservatives are all there...
SciShow
A Sugar-Coated Asteroid May Have Made All Life Possible
New ReviewArrokoth, an asteroid in the Kuiper Belt, is the most distant object ever explored by the New Horizons spacecraft. And it's covered in sugar. Here's why that might be important for understanding the nature of life itself. Hosted by:...
SciShow
We Used To Clean Our Clothes With Gasoline
New ReviewDry cleaning has gone from kerosine to perc to wet cleaning in an attempt to make it less ...deadly. Over the years, dry cleaning has evolved to address the dangers of flammability, interactions with your lungs, and environmental harm,...
SciShow
Are Energy-Efficient Windows Bad For Us?
New ReviewLow-E windows have reduced the amount of energy required to heat and cool our buildings, a critical step in fighting climate change. But new research suggests we've lost something beneficial in the process. Hosted by: Hank Green (he/him)
Crash Course
Carbon & Biological Molecules: What is Life Made Of?: Crash Course Biology #20
New ReviewDespite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the...
Crash Course
Evolutionary History: The Timeline of Life: Crash Course Biology #16
New ReviewHumans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing...
MinutePhysics
What is Touch?
In this quantum world, what does it mean to touch something? Do we really hover above the chairs we're sitting in?
MinuteEarth
How Do Trees Survive Winter?
Humans can go inside or put on clothes, but trees spend winter naked in the cold. Why don't they all die?
MinuteEarth
Why Are There Clouds?
Want to learn more about the topic in this week's video? Here are some key words/phrases to get your googling started: - Lifting Condensation Level (LCL): The altitude at which the water vapor in rising air begins to condense - Adiabatic...
MinuteEarth
Why Are Leaves Green? Part 2
Still wondering why leaves are green and not purple or even black? CHLOROPHYLL! It's how leaves work.
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
Four Weird Ways to Make Electricity
When you think of newer ways to make electricity, solar cells and wind turbines may come to mind. But scientists can make the stuff from just about anything. And they're working on some truly bizarre ways to generate power.
SciShow
How Much of the Periodic Table is in YOU?
About 99.9% of your typical human body is made of just 11 elements from the periodic table. But hiding in that remaining 0.1% are some elements that do some very important jobs to keep you alive and healthy. Including some elements you...
SciShow
Relative Humidity Isn't What You Think It Is
Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way!
SciShow
A Vaccine That Makes Your Immune System ... Forget?
Vaccines for covid or the flu teach your immune system to remember a threat so that it responds when that threat shows up. Some researchers want to delete immune memories instead, because those aberrant memories are the cause of...
SciShow
The World’s Strongest Acid Might be Gentle Enough to Eat
Hearing the word "superacid" may evoke memories of that scene from Breaking Bad, but perhaps counterintuitively, the strongest acid on Earth wouldn't be able to destroy your bathroom.
SciShow
How We Make Glass Nearly Unbreakable … With Science
We know that glass is fragile - that's like, it's main thing. But research is working on improving how we make glass to make it unbreakable, or at least as close as we can get. Here's the latest on how to make truly shatterproof glass!
MinuteEarth
Which Will Kill You First?
The body can get a whole lot colder - but not a whole lot hotter - before we die. Why is that?
PBS
How We Identified One of Earth’s Earliest Animals
Scientists had no idea what type of organisms the life forms of the Ediacaran were—lichen, colonies of bacteria, fungi or something else. It turns out, the key to solving the puzzle of Precambrian life was a tiny bit of fossilized fat.