SciShow
The Closest Black Hole Isn't as Far as You'd Like
Where is the closest black hole to Earth? Well, they're pretty hard to find, so the record-holder keeps getting updated. Currently, it's an unassuming black hole called Gaia BH1. But research has hinted at several black holes that might...
SciShow
Everyone Was Wrong About Ghengis Khan
There's an oft-quoted statistic that something like 5% of people are related to Genghis Khan. And the guy did have a lot of kids. But the truth is more complicated. Here's how we use Y chromosome analysis and small groups of genetic...
SciShow
Medicine Cabinets Shouldn't Exist
The conditions in many medicine cabinets turn out to be detrimental for medicines—some worse than others. Hosted by: Hank Green (he/him)
SciShow
How NASA Gave Us a Better Mattress
NASA scientists are said to have invented a lot of household items over the decades. Some, like Velcro, or Tang, or the first cordless power tools, are misattributions. But other claims are totally legit. And you probably own at least...
SciShow
The Most Important Explosion in History
Not long after the supernova of 1604, the telescope was invented. But astronomers would have to wait nearly FOUR CENTURIES to witness the next supernova that was visible to the naked eye. It was 1987, and a blue supergiant in the Large...
SciShow
What Made This Huge Hole Under Greenland?
In the mid-2010s, researchers discovered something odd underneath Greenland - there was a giant hole under a glacier, and they had no idea what had caused it. More confusing still, other researchers were searching for the cause of a mini...
SciShow
A Better Treatment for Overdose Is Coming
Naloxone, better known as Narcan, is today's gold standard to treat opioid overdose. But sometimes it comes up short against more potent opioids like fentanyl. So future treatments might take advantage of opioid receptor...
SciShow
Six-Foot Long Millipedes?! And Other Fossil Giants
Six-foot millipedes? The biggest apes ever? And a kangaroo too big to hop? These are just a few of the biggest animals of their kinds to ever exist, and they're not just big, they're WEIRD. So let's talk about why Gigantopithecus went...
SciShow
The 6 Deadliest Mushrooms
Some of your favorite mushroom recipes might use toxic ingredients! These are the top killers worldwide among fungi, from morels to webcaps. Hosted by: Hank Green (he/him)
SciShow
Do We Have to Die?
Do humans have to die? What causes aging, and can we get around it? We'll talk about why we age and what kind of treatments can help us live longer. Hosted by: Niba @NotesbyNiba (she/her) Correction: Her last name is "Calment"
SciShow
Does the Moon Control Your Period?
People have been making the connection between the moon's phases and the menstrual cycle for centuries. But when it comes to controlling periods, we may have been looking at the wrong thing in the sky. Hosted by: @NotesByNiba (she/her)
SciShow
Does Analog Music Really Sound Better Than Digital?
Everyone has that friend who loves records and insists that analog music is superior to digital. But is that true? Hosted by: Hank Green (he/him) Correction: Although this graphic can be found in many seemingly reputable sources, we've...
SciShow
What is a Fish?
In this special episode, marine biologist Jaida Elcock (@sofishtication) joins Hank Green for a conversation all about fish! As our first SciShow Resident, Jaida spent the last 17 weeks writing and hosting a series of videos that will...
SciShow
The Biggest Marine Reptile Ever (Was Found By An 11 Year Old)
When it comes to major discoveries in paleontology, you usually picture a bunch of old professors in khaki digging in the desert. But when Ruby Reynolds discovered a truly groundbreaking ichthyosaur fossil that sheds light on what may be...
SciShow
Why We Need Camels To Treat Cancer
In the fight against diseases like cancers and blood disorders, sometimes we need to turn to unexpected allies. And in this case, one of those allies was a tiny little nanobody hiding inside of... camels. Hosted by: Savannah Geary...
SciShow
For mRNA Vaccines, COVID Was Just the Beginning
mRNA vaccines stopped the COVID-19 pandemic in its tracks. Now, they're poised to help us against the flu, rabies, cancer, and more. Hosted by: Niba @NotesbyNiba (she/her)
SciShow
Here’s the Reason Why Megalodon Got Mega
We've learned a lot about Megalodon by studying its terrifying teeth. But we're just beginning to understand what made this ancient shark so huge. Hosted by: Jaida Elcock (she/her)
SciShow
The World’s Biggest Fusion Reactor Doesn’t Do Anything
When ITER's tokamak finally comes online (as of July 2024, that's 2034 for its first round of research, and 2039 for deuterium-tritium fusion), it will become the world's biggest fusion reactor. But don't hold your breath for a green...
SciShow
6 Inventions That Are Older Than You Think
From steam engines, to contact lenses, to biometric security based on someone's voice, there are a lot of inventions out there that are older than you think. Hosted by: Hank Green (he/him)
SciShow
Is Co-Sleeping REALLY Dangerous?
If you've ever taken care of a baby, you might have heard that sleeping on the same bed with them, AKA co-sleeping, is a big no-no. But the research into the ins and outs of bed sharing is more complicated than you might think. Hosted...
SciShow
The Ocean Has Weather Too And It's Weird
Weather may be something you associate with life on land, but the ocean has its own version of fronts and storms. Hosted by: Jaida Elcock (she/her)
SciShow
The Universe Has a Memory
Hey remember that time you waved at a stranger who was actually waving at someone behind you? The universe can, at least in its own way. If you thought gravitational waves were wild, just wait until you hear about this thing called...
SciShow
The Most Popular Blue in History (Was Ignored By Egypt)
It's no secret that people like pretty stuff, or that we like to make our worlds as pretty as possible. And for centuries, tons of people have used the mineral in this month's Rocks Box to paint the towns blue, so let's talk about some...
SciShow
We're About to Visit the Second Best Place for Life
This October, the launch window opens for NASA's Europa Clipper mission. When it arrives in the Jovian system, this spacecraft will probe the icy moon...and its ocean buried kilometers beneath the surface...for the ingredients of life as...