Be Smart
Why NASA Punched an Asteroid
Where did life come from? It’s one of the biggest questions humans have ever asked — and the answer might be locked in ancient space rocks that were around before life began. To find out, NASA pulled off one of its most ambitious...
TED-Ed
The dark history of arsenic | Neil Bradbury
No substance has been as constant an ally to insidious scheming as arsenic, the so-called “king of poisons.” In its chemically pure form, it isn’t much of a threat because our bodies don’t absorb it well; it’s when arsenic combines with...
SciShow
How Do We Know How Old the Earth Is?
In the wake of World War 2, Clair Patterson embarked on a scientific quest to find out how old the Earth really is. His hard work paid off, but it also revealed a modern danger.
SciShow
Hayabusa: The Artificial Meteor Launched From An Asteroid
After we retrieved samples of the moon, it was quite a while before we could land on anything else and bring bits of it back home.
SciShow
How to See Really Tiny Things Without Killing Them
Where would biology be without microscopes? But for a long time, in order to see the smallest bits of life, that life had to be dead. Then along came Atomic Force Microscopy, which let us observe things like DNA and proteins moving...
SciShow
These 100-Million-Year-Old Microbes Are Still Alive!
Researchers have found ancient communities of microbes that have been buried deep, for a hundred million years! This discovery might be the oldest living thing on Earth, and could even expand the search for life on other planets.
SciShow
How Dogs Can Smell When You're Stressed
Did you know that dogs can tell when you're stressed out? But how do they know? Turns out they can smell it! Join Hank for a new episode of SciShow and learn all about it! Hosted by: Hank Green (he/him)
SciShow
Why Carbon Dating Might Be in Danger
Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.
SciShow
What Happens When Matter is Pushed to the Extreme
Improving batteries is a tough problem, but it’s also an important one because in many ways the future of our planet also depends on the future of batteries. Luckily, scientists are on the case, figuring out ways to give this essential...
SciShow
4 Ways CRISPR Is More Than Just Gene Editing
While it’s probably most famous for its role in gene editing, CRISPR does more than just that: its ability to precisely cut and alter DNA could lead to new antibiotics, faster diagnosis tools, and more.
SciShow
Is There DNA in Dirt?
You know about fossils, but what other secrets are lurking in the ground beneath our feet?
SciShow
Abundant Water on Mars, and Mongols Rule!
This week on SciShow news Hank explains what Curiosity has found, . . .water on Mars!
SciShow
Why Days Are Getting Longer
You can complain about having the longest day ever today, and here is the science to prove it!
TED-Ed
TED-Ed: What happens if an engineered virus escapes the lab? | TED-Ed
Since the 1970s, researchers have engineered superbugs. While this research could help us prepare for future outbreaks, the stakes of this work are extremely high: if even one dangerous virus escaped a lab, it could cause a global...
PBS
How remote national park made a mammoth discovery (SRL)
California's Channel Islands National Park is the site of a recent mammoth discovery: a pygmy mammoth skull, to be precise. This report was produced as part of our Student Reporting Labs by students from Etiwanda High School in Southern...
PBS
Can Uganda Block Ebola’S Spread From Neighboring Congo?
Eastern parts of Democratic Republic of Congo are suffering from the second-worst outbreak of the deadly Ebola virus in history, with more than 500 dead so far. Neighboring Uganda is watching with concern as the crisis unfolds, wary of...
SciShow
Where's My Bloodless Blood Sugar Monitor
There are about 450 million diabetics around the world, and while we do already have a reliable way of measuring blood sugar, it requires patients to prick their finger each time they want a reading. Is there a better way?
SciShow
Bioprecipitation: How Bacteria Makes Snow
Raindrops and snowflakes generally start to form around something else in the air, like a speck of dust, but sometimes that something else is bacteria.
Crash Course
How Do We Know We're Sick? Crash Course Outbreak Science
Sometimes, diagnosing patients is pretty easy, but other times... not so much. Luckily, in a medical setting we have tools that can help us figure out what's wrong with patients, and how to help them. In this episode of Crash Course...
SciShow
How Studying Bacteria Almost Kept Us From Discovering the Flu
Today we know pathogens -- viruses, bacteria, and certain other microbes -- are responsible for many diseases. But linking specific diseases to the microbes that cause them has been surprisingly tricky, and some research practices lead...
SciShow
Why Don't We Have Cancer-Sniffing Dogs?
There are a lot of stories out there about dogs who seemed to smell lung cancer on their owner’s breath, and a recent study found that some dogs can detect lung cancer in blood samples with astonishing accuracy. So why aren’t there...
SciShow
4 Ways CRISPR Is More Than Just Gene Editing
While it’s probably most famous for its role in gene editing, CRISPR does more than just that: its ability to precisely cut and alter DNA could lead to new antibiotics, faster diagnosis tools, and more. Chapters CREATING ANTIBIOTICS 1:07...
TED-Ed
TED-ED: Could a breathalyzer detect cancer? - Julian Burschka
How is it that a breathalyzer can measure the alcohol content in someone’s blood, hours after they had their last drink, based on their breath alone? And could we use this same technology to detect disease by analyzing a person’s breath,...
SciShow
Is Urine Really Sterile?
Despite what you might've seen on some wilderness-survival show, there's increasing evidence that your pee isn't sterile. So don't do anything crazy with it. Sci Show explains!