If you've got a uterus, you've probably heard of menopause. But there's a lot that doesn't get talked about when it comes to this period, or lack thereof. This video is going to break down the real deal with menopause and give you...

Drawing on her research into the science of play, evolutionary biologist Carole K. Hooven delves into how testosterone impacts the body and brain, interacting with culture to create differences in human behavior — starting with why boys...

Breast cancer is a shockingly common disease - as many as 13% of females may get it at some point in their lives. And there's a lot of confusing info out there about it, from hormones to BRCA genes to risks and treatments. So we're here...

We all remember the woes and trials of our adolescence. But what you may not have realized is that your middle-school bout with surging hormone's wasn't the first time you went through a sort of puberty. From surging hormones to hair...

Hank delves into the scientific reasons behind why we are attracted to the people we're attracted to. It's complicated.

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. Hosted by: Hank Green

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.

Puberty is an awkward time for just about everybody, but for transgender teens it can be a nightmare, as they grow overnight into bodies they aren't comfortable with. In a heartfelt talk, Norman Spack tells a personal story of how he...

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How do I grow a beard?”? Let SciShow explain.

This week on the show Dr. Lindsey Doe, host of Sexplanations, walks us through a history of cases that have altered our understanding of gender identity. Then Jessi from Animal Wonders joins the show with Kiki, a domestic cat.

Sperm count in Western countries has been dropping for over a hundred years, and scientists have some ideas as to what’s behind this swimmer shortage.

Hank delves into the scientific reasons behind why we are attracted to the people we're attracted to. It's complicated.

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How do I grow a beard?”? Let SciShow explain.

Do you think animals can be divided into two biological sexes: female and male? Well, it's way more complicated that that!_

For a long time, most people saw ADHD as “a boy thing.” Today, that mindset has started to shift, but even now, studies report that males get diagnosed significantly more often than females. So, what’s going on?

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.

A safe, reversible option for male birth control has eluded scientists for decades, but a new pill is showing a lot of promise!

Romantic chemistry is all about warm, gooey feelings that gush from the deepest depths of the heart-right? Not quite. Actually, the real boss behind attraction is your brain, which runs through a very quick, very complex series of...

Our month-long exploration of human reproduction continues with a look at testicular anatomy, the steps of sperm production, and how it's influenced by gonadotropin and testosterone. Hank also explains how sperm mature, and how...

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!

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.

Hank lets us in on the meaning of life, at least from a biological perspective - it's reproduction, which answers the essential question of all organisms: how do I make more of myself? So, sex, how does it work?

Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development & function.

You've heard about them, but do you how they work? Or why they suck? Hank explains the science behind performance enhancers, including steroids, blood doping, and that stuff supposedly made out of deer antlers. You'll never look at...