There are 600 million women in India -- yet they are rarely seen outdoors after sunset because of safety concerns like harassment and catcalls. On a mission to create safer public spaces, women's rights advocate Srishti Bakshi talks...

Some parasites can hijack the brains of their victims and cause them to behave in strange ways, but how they do it, and do we humans need to be worried?

Jessi and Squeaks are ready to play outside, but there’s a unique plant they should be sure to avoid: poison ivy!

Our immune systems aren't just critical to our physical health. It turns out they may play a big role in our mental health, as well. And learning more about how these two aspects of our health are interconnected can help us develop...

Your heart beats more than 100,000 times a day. In just a minute, it pumps over five liters of blood throughout your body. But unlike skin and bones, the heart has a limited ability to repair itself. So if this organ is severely damaged,...

Babies are amazing, tiny humans. They’re so fascinating that we’ve done a lot of videos about them, so we’ve collected a bunch of our favorites here for you to enjoy!

While sugar is easy to spot in candy, soft drinks and ice cream, it also hides out in foods you might not expect -- including peanut butter, pasta sauce and even bologna! Robert Lustig decodes confusing labels and sugar's many aliases to...

Is personalized medicine for individual bodies in our future? Possibly -- with the use of stem cells, undifferentiated cells with the power to become any tissue in our bodies. Craig A. Kohn describes the role of these incredible,...

We continue our look at your bones and skeletal system, skipping over the silly kid's song in favor of a more detailed look at your your axial and appendicular skeleton. This episode also talks about the structural and functional...

On top of our heads, there is a type of yeast that lives and dines on all of our scalps. Feasting constantly, it's in paradise. And in about half of the human population, its activity causes dandruff. So, why do some people have more...

You come home from an intense workout, muscles aching, and lower yourself into a warm epsom salt bath from some sweet relief. But are all those extra minerals really helping soothe your pain?

Many of us will experience some kind of trauma during our lifetime. Sometimes, we escape with no long-term effects. But for millions of people, those experiences linger, causing symptoms like flashbacks, nightmares, and negative thoughts...

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

As 18th-century science and medicine brought properties of electricity to light, some Victorian doctors decided that putting sick people in a bathtub and shocking them might be a good idea.

We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow....

They say mom's never far away, but I don't think this is what they had in mind. In this episode, learn about the mind-blowing connection you share with your mom. A little bit of you never leaves the other!

What if your basic at-the-office elevator ride takes a sudden turn for the dark side of gravity, could you survive it?

THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T...

Paul Andersen starts with a brief description of feeding methods. He then details all of the major parts within the human digestive system. This tour starts in the mouth, move down the esophagus, through the stomach, small investing,...

In this video Paul Andersen gives an overview of the human urinary system. The system consist of the kidneys, ureters, bladder, and urethra. The kidneys excrete waste from the blood in urine. He explains how the nephron is responsible...

Werewolves might not be real, but the myths about them could have come from real scientific phenomena, like a misunderstanding of certain illnesses.

Inside you, a daily battle is being waged and your immune system is at the frontline. Most of the time, you may not even notice it's there, but over the course of your life your immune system will guard you against hundreds of...

Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt...

Where there's life, there's other life looking for a free ride. Here are six of the world's oldest parasites.