How did dinosaurs become birds—and what good is half a wing? Join Joe and a few brave chickens as they recreate a brilliant experiment that helps solve one of evolution’s greatest mysteries: the origin of feathered flight.

Across life on Earth, blood comes in red, blue, green, purple, even clear. But why? And what makes your blood different from mine? This video will teach you everything you need to know about the strange world of blood—what it does, why...

The world is full of microbes and viruses that can get us sick, but we’ve got an Avengers-style defense system ready to take them on. In this episode of Crash Course Biology, we’ll learn about an animal’s immune system, from their skin...

Everybody poops ... but is it possible that you're pooping all wrong? Learn the science behind the greatest debate of our time: squat vs. sit! Thanks to Patreon Patron Maia for asking this important question!

Last week, the recipients of the 2017 Nobel Prizes were announced. We take a closer look at the winners of the Physiology and Chemistry Awards, whose breakthroughs change the way we study sleep, and allow us to look at microscopic...

Humans have been battling heartburn for hundreds, if not thousands, of years. But recently the incidence has risen, making it a common complaint worldwide. What causes this problem, and how can it be stopped? Rusha Modi details the...

This week we learned that the Neanderthal/Denisovan/Human family tree is pretty complicated, thanks to a close look into some Neanderthals' Y chromosomes.

We’ve told you before that there really isn’t any evidence that animals consume mind-altering substances because they feel good to them. This makes it appear that the fondness for psychoactive drugs is, pretty...human. What is it about...

Humans go by the name of Homo sapiens. How did our species come to be? How and when was human civilization developed? The fields that seek to answer these huge questions are anthropology and archeology. We will study the evolution of...

The biology major is a great major for students interested in a variety of career paths including medicine, health care, research, consulting, sales and much more.

In this video, young people learn how to stay clean and comfortable during their periods, including instructions on how to use a sanitary pad, tampon, and menstrual cup.

Did you know that you have a blind spot in your eye? In fact, every person has an unavoidable blind spot in each of their eyes. This doesn't mean that you see a constant black spot in your field of vision though. Normally you don't...

In this video, young people learn the basis of many tradition and taboos around menstruation in India.

Could some pharmaceutical birth-control methods be having side-effects that are more dangerous than women realise? The birth control pill was one of the greatest inventions of the 20th century. But decades after its introduction, women...

Hey there! Thanks for stumbling on our introduction video. Neuro Transmissions is a channel on a mission to bring neuroscience to everyone. It's not rocket surgery, it's brain science!

In this video, young people learn that consent is necessary before initiating any type of romantic or sexual act, and that it is about giving and receiving a "yes" or a "no" They learn that both love must be based on consent, not on...

In this video, young people learn how to prevent pregnancy through the use of contraception, or abstinence.

In this video, young people learn the basis of human reproduction in adults, starting with the journey of the sperm to leave to the male reproductive system, and the egg to move from the ovary to the uterus. We'll learn that it takes two...

In this video, young people learn about the different types of sexually transmitted infections and how they are transmitted.

In this video, young people learn the basis of human reproduction in adults, including sexual intercourse and fertilisation of the egg. We learn that it takes two parts to make baby, and that anatomical words related to reproduction are...

In this video, young people learn the biological process of menstruation. They also learn that menstruation is a normal, healthy, and clean phenomenon, which should be embraced as a beautiful entry into womanhood.

In this video, young people learn about the amazing physical and emotional changes that they will go through on the journey to becoming adults, that all the changes they will experience are normal and transient, and to respect each...

In this video, young people learn how to prevent sexually transmitted infections through the use of condoms or abstinence.

In this video, young people learn that a girl's hormonal cycle has four weeks, through which her hormone levels rise and fall - much like the lunar cycle. Girls are encouraged to be conscious of their physical and emotional states during...