SciShow
Why River Otters Have Bones… In Their Hearts
Most mammals can develop bones in their hearts. For humans, it's usually a bad thing, but for river otters, it could be a useful adaptation.
SciShow
Why Haven't We Eradicated Polio?
If we’ve had vaccines for the polio virus for almost 70 years, why haven’t we been able to fully eradicate it from the globe? Hosted by: Hank Green (he/him)
SciShow
Why Genetic Engineering Can’t Do Everything (Yet)
We've made some great strides in understanding the human genome, but before we can tackle genetic engineering, we have some "chicken and egg" problems to figure out. Hosted by: Hank Green
SciShow
Why Do Women Live Longer Than Men?
Evidence strongly suggests that men have, on average, a shorter lifespan than women, but scientists aren't exactly sure why that is. Check out today's QQ to learn more about this mortality mystery.
SciShow
Why Are There Righties & Lefties?
About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.
SciShow
Why Are Pandas Black and White?
Their signature black and white color scheme is part of what makes pandas instantly recognizable - but not many mammals are black and white, so... why do they look like that?
SciShow
When Two Species Mix
We often think of categories as fixed, with a species being a species no matter what. The thing is, life doesn’t have to follow our rules.
SciShow
When Algae Learned to Hunt
You probably don't consider algae to be super aggressive, but 66 million years ago had to turn to murder in order to survive.
TED-Ed
TED-Ed: Why do we have crooked teeth when our ancestors didn't? | G. Richard Scott
According to the fossil record, ancient humans usually had straight teeth, complete with wisdom teeth. In fact, the dental dilemmas that fuel the demand for braces and wisdom teeth extractions today appear to be recent developments. So,...
TED-Ed
TED-Ed: Whatever happened to the hole in the ozone layer? | Stephanie Honchell Smith
In the 1980s, the world faced a huge problem: there was a rapidly expanding hole in the ozone layer. If it continued to grow, rates of skin cancer could skyrocket, photosynthesis would be impaired, agricultural production would plummet,...
TED-Ed
TED-Ed: Can zoos actually save species from extinction? | Nigel Rothfels
For thousands of years, native Takhi horses roamed the steppes of Central Asia. But by the late 1960s, their extinction seemed inevitable. To prevent this, scientists and zoos started a breeding program and soon began releasing new...
TED-Ed
TED-Ed: How does this all-female species reproduce? | Susan Freitas and Darren Parker
In 2021, workers at a Sardinian aquarium were stunned by the birth of a smooth-hound shark. What was shocking was that, for the last decade, the shark's mother had been living only with other females. So, how was this birth possible? And...
TED-Ed
TED-Ed: 1816: The year with no summer | David Biello
In 1815, Mount Tambora erupted and its emissions spread across the globe, blotting out the sun for almost an entire year. This wreaked havoc on agriculture, leading to famines all across the Northern hemisphere. It was the year without...
SciShow Kids
What Was the Big Bang and Other Space Questions Answered! | SciShow Kids
Jessi and Sam the Bat team up to answer your questions about space, like: How was the universe created?
SciShow Kids
Quetzalcoatlus: The Biggest Animal Who Ever Flew! | The Science of Flight | SciShow Kids
The birds you see around today might not be that big, but a long time ago, there was a flying animal the size of some airplanes!
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...
TED-Ed
TED-Ed: Ethical dilemma: Should we get rid of mosquitoes? | Talya Hackett
Mosquitoes are responsible for more human deaths every year than any other animal, but very few of the 3,500 mosquito species actually transmit deadly diseases to humans. Scientists have been conducting experiments using engineered...
TED-Ed
TED-Ed: Can you freeze your body and come back to life? | Shannon N. Tessier
In 1967, James Bedford had a plan to cheat death. He was the first person to be cryogenically frozen. This process promised to preserve his body until a theoretical future when humanity could cure any illness, and essentially, reverse...
PBS
Until research unlocks medical understanding of marijuana, patients experiment
Lenny and Amy’s 5-year-old son has epilepsy. When conventional medications caused terrible side effects, they started giving him a daily drop of cannabis oil, with dramatic results. But it’s a calculated risk: While there is anecdotal...
PBS
When Does Genetic Modification
In a web exclusive interview, Emily Anthes, author of the book,
"Frankenstein's Cat," talks to Ray Suarez about the ethical limits when
using animals in biotech research and development.
PBS
Until research unlocks medical understanding of marijuana, patients experiment
Lenny and Amy's 5-year-old son has epilepsy. When conventional medications caused terrible side effects, they started giving him a daily drop of cannabis oil, with dramatic results. But it's a calculated risk: While there is anecdotal...
PBS
Flying into hurricanes, scientists search for more certainty
How do meteorologists and scientists make predictions about the power and trajectory of a hurricane? Buckle up. Science correspondent Miles O'Brien joins a crew of scientists who fly right into the eye of Hurricane Florence.
PBS
New analysis finds parts of the U.S. have already warmed close to critical 2-degree level
For years, scientists have warned that we need to stop the planet from warming an additional two degrees Celsius above pre-industrial levels to avoid catastrophic problems. But a new analysis by The Washington Post finds many major areas...
PBS
Will The Traditions Of Tiny Tangier Island Survive Or Sink?
Life on Tangier Island has always been defined by water. Now it is menacing its very existence. Battered by Chesapeake Bay's relentless waves, scientists say the land’s shrinking is accelerating, as man-made climate change makes the...