SciShow
How a Bee Becomes Queen
Royal jelly! For bees, it’s what makes all the difference between a queen and a worker.
SciShow
The Unexpected Connection Between Estrogen and Autism | SciShow News
There's a lot we don't understand about autism spectrum disorder, but this week scientists announced that they may have found a link between the disorder and elevated hormone levels.
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...
SciShow
Why Did You Skip a Period?
Have you had a normal menstrual cycle and then you suddenly miss a period? There are different reasons why this can happen, and if you don't experience a period you were expecting, you’ll probably want to talk to your health care...
SciShow
The Science of Men
Learn about the history of dudes, and a new theory about deep voices in this new episode of SciShow News. You know, science... bro... stuff.
SciShow
What’s the Deal with Antibiotics and Birth Control
You might have heard that you should use a back-up method of protection if you’re taking birth control pills and antibiotics at the same time. Turns out, you might not have to worry about it.
TED-Ed
TED-Ed: How your digestive system works - Emma Bryce
Constantly churning inside of you, the digestive system performs a daily marvel: it transforms your food into the vital nutrients that sustain your body and ensure your survival. Emma Bryce traces food's nine-meter-long, 40-hour journey...
SciShow
3 Things Your Cat Should Not Be Doing
Cats are known for their curiosity, and as that one saying goes “it killed the cat”. But we can help our cuddly counterparts avoid this sad fate if we watch out for these three everyday things.
Amoeba Sisters
Endocrine System
Explore the endocrine system with the Amoeba Sisters! This video briefly discusses endocrine vs exocrine before showing major endocrine glands and discussing examples of hormones released by each gland. Video also provides an example of...
TED-Ed
TED-Ed: Why do women have periods?
A handful of species on Earth share a seemingly mysterious trait: a menstrual cycle. We're one of the select few mammals on Earth that menstruate, and we also do it more than any other animal, even though it's a waste of nutrients, and...
SciShow
Manipulating plant genes...through grafting!
If you plant a seed from your orange, you might have to wait as long as 15 years to get a tree with fruit, which is kind of a bummer for the impatient types among us. Fortunately, there’s an age-old trick called grafting that can shorten...
SciShow
Are Power Poses Super Life Hacks or Super Junk?
Your body language can communicate a lot of information to other people, but can striking a power pose revolutionize your life?
SciShow
What Causes Food Cravings?
Why do I really, really want ice cream right now? Today we explore the science of food cravings!
SciShow
The Salamander That Refuses to Grow Up
If you hear the word “baby-faced” you might picture a doe-eyed celebrity who never seems to age. But, really, you should be thinking of the axolotl. However, it is possible to transform these otherwise forever-babies, causing them to...
SciShow
Onions, Emotions, and Why We Cry
Have you ever wondered why we cry? In today's episode of SciShow, Hank gives us the answer, covering different types of tears and whether we are the only species to get all teary eyed during the final scene of a good movie.
Crash Course
Biological Molecules - You Are What You Eat: Crash Course Biology
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.
SciShow
Why Do People Go Bald?
How does balding work? Why does it happen? And why are men so much more likely to lose their hair than women? Quick Questions has the answers!
SciShow
The Protein That Switches on Puberty
Puberty is a wild time in human bodies, and so much goes on as they transform from a child to an adult. But it turns out, the whole process is controlled by a single protein - and it’s probably one you’ve never even heard of.
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
SciShow
Does The Birth Control Pill Cause Depression?
Hormonal birth control has completely changed the game in health and letting people choose if and when they want to become pregnant. And like any medical treatment, it comes with some risks.
SciShow
Why Do Women Have More Autoimmune Conditions
Our immune systems are generally pretty great, but sometimes they can turn on us. And for some reason, these autoimmune conditions mostly affect women.
SciShow
What Causes Morning Sickness?
If you've ever been pregnant, or been around a pregnant lady, you know that the agony that is morning sickness -- and it's not just something that happens in the morning! SciShow explains the many theories about what causes it.
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!
Bozeman Science
Plant Control
Paul Andersen explains how plants use hormones to respond to their environment. The following hormones are detailed; auxin, cytokinins, gibberelins, abscisic acid and ethylene.