Tag: TED Education

How do drugs affect the brain? – Sara Garofalo

How do drugs affect the brain? – Sara Garofalo

Most people will take a pill, receive an injection, or otherwise take some kind of medicine during their lives, but most of us don’t know anything about how these substances actually work. How can various compounds impact the way we physically feel, think, and even behave? For the most part,

How the food you eat affects your brain – Mia Nacamulli

How the food you eat affects your brain – Mia Nacamulli

Your Brain on Food If you sucked all of the moisture out of your brain and broke it down to its constituent nutritional content, what would it look like? Most of the weight of your dehydrated brain would come from fats, also known as lipids. In the remaining brain matter,

How does cancer spread through the body? – Ivan Seah Yu Jun

How does cancer spread through the body? – Ivan Seah Yu Jun

The onset of cancer usually begins as a solitary tumor in a specific area of the body. If the tumor is not removed, cancer has the ability to spread to nearby organs, as well as places far away from the origin, such as the brain. So how does cancer move

The science of skin – Emma Bryce

The science of skin – Emma Bryce

Between you and the rest of the world lies an interface that makes up 16% of your physical weight. This is your skin, the largest organ in your body: laid out flat, it would cover close to 1.7 square meters of ground. Its purpose may seem obvious— to keep our

How do cigarettes affect the body? – Krishna Sudhir

How do cigarettes affect the body? – Krishna Sudhir

Cigarettes aren’t good for us. That’s hardly news–we’ve known about the dangers of smoking for decades. But how exactly do cigarettes harm us? Let’s look at what happens as their ingredients make their way through our bodies, and how we benefit physically when we finally give up smoking. With each

What is obesity? – Mia Nacamulli

What is obesity? – Mia Nacamulli

The most basic function of bodily fat is self-storage of food reserves. In prehistoric times, natural selection favored genotypes that could endure harsh conditions by stocking the most fat. With chronic malnutrition being the norm for most of human history, genetics evolved to favor fat storage. So when did body

What causes constipation? – Heba Shaheed

What causes constipation? – Heba Shaheed

Visiting the bathroom is part of the daily human experience. But occasionally, constipation strikes, a condition that causes a backup in your digestive system. The food you eat can take several days to exit your body. And for many, constipation can become chronic, meaning regularly passing lumpy hard stools accompanied

The science of milk – Jonathan J. O’Sullivan

The science of milk – Jonathan J. O’Sullivan

Why do humans drink so much milk? And given that all mammals lactate, why do we favor certain types of milk over others? Milk is the first thing we drink, and thanks to developments in the production and variety of dairy products, it can take on countless forms for our

The surprising cause of stomach ulcers – Rusha Modi

The surprising cause of stomach ulcers – Rusha Modi

In 1984, an enterprising Australian doctor named Barry Marshall decided to take a risk. Too many of his patients were complaining of severe abdominal pain due to stomach ulcers, which are sores in the lining of the upper intestinal tract. At the time, few effective treatments for ulcers existed, and

How does your immune system work? – Emma Bryce

How does your immune system work? – Emma Bryce

A mosquito lands on your arm, injects its chemicals into your skin, and begins to feed. You wouldn’t even know it was there, if not for the red lump that appears, accompanied by a telltale itch. It’s a nuisance, but that bump is an important signal that you’re protected by