SciShow
No, Your Dog Doesn't Think You're the "Alpha"
The toughest, most dominant canine gets the resources and respect - or at least that's the idea that caught on culturally. Turns out, that's not necessarily how it works.
SciShow
Let's Go To Mars
Hank discusses the challenges involved in manned space travel to Mars, and sends us a message from his 17-year-old self.
SciShow
6 Parasites That Live INSIDE Cells
When you think "parasite," you might think of leeches or some nasty tape worm, but there are some that can live inside your very own cells.
SciShow
5 Times Evolution Did Its Best
Usually when you think of evolution or natural selection, you think of survival of the fittest. But sometimes, the resulting traits of evolution aren’t the most efficient solutions to the problems at hand. With the bar set to “good...
SciShow
That’s Probably Not a Spider Bite
Unless you saw the spider bite you, that swollen, bite-looking lesion on your arm is probably something else, and blaming it on an innocent 8-legged critter might do more harm than good. Hosted by: Stefan Chin
SciShow
What Would Happen if Mosquitoes Went Extinct?
Do mosquitoes serve a purpose in the ecosystem? As one of the most hated creatures on the planet, some people have wondered why we don't just kill them ALL? Let's unpack this issue, with SciShow!
SciShow
How Pheromones Work in Humans
Are we really attracted to other people through pheromones? How do they work? Turns out it's much more complicated than you might think. Join Hank Green for a fascinating look into the world of human pheromones in this new episode of...
SciShow
How Much Junk Is in Your DNA Trunk?
The human genome is 3.2 billion base pairs long and contains around 20,000 genes, but how much of that is garbage? Hosted by: Hank Green
SciShow
How Humans Are Almost Identical to Chimps, According to DNA
On the genetic level, we're not all that different from chimps. But those small differences in DNA can have massive effects. Learn what makes us truly different from chimpanzees in this new episode of SciShow!
SciShow
What Actually Happens on the Full Moon? | 8 Full-Moon Myths & Facts
From menstrual cycles to rainfall, there are lots of claims about the moon's influence. In today's episode, Hank is here to set the record straight with 8 myths & facts about our moon.
SciShow
Is the Y Chromosome Disappearing?
Scientists know that the Y chromosome has been shrinking in size over millions of years, but recent studies suggest that it has more important genes, besides the ones that cause biological maleness. Hosted by: Michael Aranda
SciShow
Why Don’t Humans Have Whiskers?
You might have a beard, or a mustache, or even a soul patch. What you don't have are whiskers. Hosted by: Hank Green
SciShow
Why Do We Stretch in the Morning?
Humans (and our pets) frequently instinctively stretch as soon as we wake up. But why? What is happening in our bodies when we stretch and yawn to wake ourselves up?
SciShow
Why Can’t You Use E15 Gas in Summer?
A new strain of bird flu has been detected in North American birds for the first time in seven years. And U.S. President Biden is temporarily lifting the country's summertime ban on E15 gasoline.
SciShow
Why Can't We Design A Bear-Proof Trash Can?
Why is it so hard for us to keep the bears out of our trash? Well, it turns out that trash cans are basically like giant food puzzles for the bears, and they are determined to win... But, we can use their wily trash-nabbing instincts...
SciShow
Why Body Hair?
In today's episode Hank talks about hair: What's it good for, what's it made of, and why do we have less than other mammals?
SciShow
Why are We So Much Chubbier than Other Apes?
Chimpanzees and bonobos may be very close to us humans on the tree of life, but one of our differences is the way we store fat. That difference comes down to types of fat cells and our DNA. Hosted by: Hank Green
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 Humans May Actually Be Fish
Is there a chance that more species may actually be closer to fish than we originally thought?
SciShow
Why Don't Humans Have a Mating Season?
Unlike lots of other animals, there’s no such thing as the “mating season” for humans, and it might have to do with how we raise our kids.
SciShow
Why Does Body-Temperature Air Feel Hot?
You'd think that air that was the same temperature as your body would feel neutral, but if you've ever been outside when it's 37 degrees Celsius out... you know that's not the case! Hosted by: Stefan Chin
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.
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: Seeing things that aren't there? It's pareidolia | Susan G. Wardle
Imagine opening a bag of chips, only to find Santa Claus looking back at you. Or turning a corner to see a building smiling at you. Humans see faces in all kinds of mundane objects, but these faces aren't real— they're illusions due to a...