Bozeman Science
The Endocrine System
Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions...
Be Smart
Why No One Can See the Stars Anymore
It never gets dark anymore. Not REALLY dark, anyway. Not like it used to. Light pollution is not only making it more difficult to see the night sky, but it's also affecting our health. For the past century and a half, since the dawn of...
Be Smart
Fixing Daylight Saving Time Is THIS Easy
Every year, hundreds of millions of people voluntarily turn their lives upside down by setting their clocks forward one hour in the spring and back one hour in the autumn on a particular date mandated by the government wherever they...
TED-Ed
TED-Ed: Can you change your sleep schedule? | TED-Ed
An early bird rises with the sun, springing out of bed abuzz with energy. Meanwhile, a night owl groggily rises much later, not hitting their stride until late in the day. How many people are truly night owls or early birds? And are our...
SciShow
How Do We Know We’re Tired?
Sleep is complicated. And there's still a lot we don't know about it, but zebrafish larvae are a surprisingly good place to look to learn more about what makes us sleepy.
SciShow
The Strange Scourge of Light Pollution
Light pollution -- it's not just the bane of light sleepers and frustrated astronomers. It also is tinkering with the biological cycles of all kinds of living things, including us! SciShow takes you behind the glare to understand the...
SciShow
SciShow: FAQ Compilation
We’ve compiled some of those frequent asks into one place, here, so hopefully, if you’ve ever wondered these curious questions, you can get a whole bunch of answers. Welcome to this episode of SciShow Compilation: FAQ!
SciShow
The Science of Sleep
If you celebrate American Thanksgiving, odds are you're full of food and pretty sleepy right about now. While you drift off for a post-feast nap, enjoy this compilation of episodes covering all kinds of different sleepy, science-y topics!
SciShow
The Strange Scourge of Light Pollution
Light pollution -- it's not just the bane of light sleepers and frustrated astronomers. It also is tinkering with the biological cycles of all kinds of living things, including us! SciShow takes you behind the glare to understand the...
SciShow
Weird Things Whales Lost on Their Journey to the Sea
When the ancestor of cetaceans went back into the water some 50 million years ago, it left a few things behind—including the functioning of certain genes that seem like they’d be hard to live without.
SciShow
Does Using Your Phone Really Hurt Your Sleep?
You've probably heard that some types of light, like the kind that comes from your phone or laptop, can be bad for your sleep if you use them too close to bedtime. But let's be real, nighttime is the best time to binge TV, so are we...
SciShow
How Do We Know We’re Tired?
Sleep is complicated. And there's still a lot we don't know about it, but zebrafish larvae are a surprisingly good place to look to learn more about what makes us sleepy.
SciShow
What Do Scientists Really Know About Polyphasic Sleep?
It is important to get enough sleep, but what happens when you get those eight hours in little naps instead of in one big chunk at night?
SciShow
The World's Most Asked Questions | Compilation
A while back, we were tasked with answering some of the world's most asked questions. So here, in one convenient location, are some of those questions and their answers.
SciShow
3 Discoveries You Missed Because of COVID
There have been a lot of scientific discoveries around COVID, but other science stories did happen in 2020 — including amazing discoveries about everything from dinosaurs to parasites.
SciShow
Why Can't I Poop When I Travel?
If you’ve ever experienced constipation while traveling, don’t worry - you are not alone, and there may be some things you can do to avoid it.
SciShow
Why Do Roosters Crow?
Michael Aranda goes to the barnyard to answer one of the most frequently asked questions about animals: Why do roosters crow? Short answer: Because they're jerks. Longer answer: They're jerks that tend to get noticed more than the other...
SciShow
What Keeps Astronauts Up At Night?
Sleep is a crucial activity for our brains to function properly. But when you’re on the ISS, you face a myriad of distractions and obligations that make it difficult to get good shuteye. So how do these astronauts ever get restful sleep?
Bozeman Science
Mechanisms of Timing and Control
Paul Andersen explains how organisms regulate timing and control. Phototropism and Photoperiodism allow plants to respond to light throughout the day and year. Circadian rhythms are used in all organisms (including animals) as an...
SciShow
World's Most Asked Questions How Can I Fall Asleep
People ask Google everything under the sun. One of the most commonly searched questions in the world is “How Can I Fall Asleep?” Allow us at SciShow to explain.
SciShow
Circadian Rhythm and Your Brain's Clock
Why do we sleep at night instead of during the day? In this episode of SciShow Hank talks about circadian rhythms, how they work, and how they regulate different processes in our bodies.
SciShow
What Being a Night Owl Does to Your Health | SciShow News
We’re learning more about the differences in health between early risers and night owls, and new research could offer even more evidence that vaping is just different from smoking, not necessarily better.
SciShow
Why Do Fevers Get Worse at Night?
If you’ve ever noticed that being sick often sucks more at night, that wasn’t your imagination. Fevers do often rise at night! Why do our bodies do that? Is there a reason we have to suffer more?
SciShow
The Wild Reasons Many Older People Wake Up So Early
You might think your grandma who wakes up at 4am just needs less sleep than younger people. Not so! Studies suggest there are some bizarre reasons older people rise at the crack of dawn, including something called brain sand!