Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

Some people have more taste buds than the rest of us. They’re called supertasters, and they can taste things others can’t. Special thanks to our tasters: Matthew Gaydos Lindsey Doe Julia Maes Hank Green

A throbbing, pounding headache. Bright zigzagging lines across your field of vision. Sensitivity to light, lingering fatigue, disrupted sleep. While an incapacitating headache is one of the most common symptoms, a migraine can include...

Sometimes, diagnosing patients is pretty easy, but other times... not so much. Luckily, in a medical setting we have tools that can help us figure out what's wrong with patients, and how to help them. In this episode of Crash Course...

It sure seems like some plants really don't want you hiking through their woods, but maybe your immune system is just overreacting.

Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

Are aliens watching Earth TV?

Some people can eat raw jalapeños like they're apples. Why do some people have a high tolerance for spicy food while others can't stand it?

Consider the claw. Frequently found on animals around the world, it's one of nature's most versatile tools. Bears use claws for digging as well as defense. An eagle's needle-like talons can pierce the skulls of their prey. Even the...

The video titled "The Parts of a Camera" explores the essential components of a camera and how they impact the quality of photographs. The video starts by explaining how light enters the camera through the shutter and gets...

Howcast - Learn how to cope with sensitive teeth from Shane Methal DDS in this Howcast video.

Howcast - Learn about the top food that is more fattening than you think from nutrition expert Alex Jamieson in this Howcast video.

Howcast - Learn what medications are available to treat premature ejaculation in this Howcast video.

Howcast -Sympathy is a delicate matter and must be handled with sensitivity and restraint. Learn to write a card to the grieving conveys respect and extends loving support.

Howcast -Learn what skin texture can reveal from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Howcast - Learn how to toilet train a child with autism from pediatrician and child development expert Asma J. Sadiq, M.D. in this Howcast video.

Howcast - Learn if there are any diets that help children with autism from pediatrician and child development expert Asma J. Sadiq, M.D. in this Howcast video.

Learn how to improve your Call of Duty: Black Ops Game through controller settings with this game tutorial.

Charismatic Leadership. Charismatic authority is a concept of leadership developed by the German sociologist Max Weber. It involves a type of organization or a type of leadership in which authority derives from the charisma of the...

A sensitivity analysis as part of the cost volume profit analysis shows how profits vary with changes in cost or volume.

Cost behavior generally concerns how costs are affected by changes in output. The relevant range is the range of production over which cost behavior is consistent.

Human fingernails are actually flattened versions of claws. All primates, including ancient ancestors of humans, had claws that supported their broad fingertips. The broad fingertips helped primates maintain a strong grip around objects,...

How the four sensory receptors in our skin, which detect heat, cold, pain and pressure, help us to feel an object, and can even help us tell if we like something or not. Biology - Being Human - Learning Points. The skin contains millions...

Discover the incredible ways in which animals and plants adapt to their environments.
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