How does Ebola kill? How does a flu vaccine work? How might electricity be used to treat medical conditions? Find out with these animated guides to brains, bugs and bodies.
Watch as a superbug is born
Antibiotic resistant bacteria are growing in number and strength and it's our fault.
How does the EpiPen work?
EpiPen can stop a body from going into overdrive when it's exposed to an allergen.
When to beware of grapefruit
Grapefruit juice interacts with some medications in very important, and potentially harmful, ways.
How Ebola kills
The Ebola virus has only 7 genes and is smaller than a blood cell, but during an infection it has the power to shut down multiple organs. Here's how it works.
Turning your cancer against itself
Personalized cancer vaccines rally the immune system to identify and kill cancerous cells based on genetic information from the patient's own tumors.
How does the flu vaccine work?
The vaccine triggers the immune system to create antibodies, preparing the body for viral battle.
Are you at risk for contracting Zika virus?
Your level of risk depends, in part, on your living conditions.
What is Guillain-Barré syndrome?
The disease, known for triggering temporary paralysis, has been linked to Zika virus infections.
Peering into the battered brain
Concussions, or even more mild, repetitive head trauma, may lead to a degenerative brain disorder called Chronic Traumatic Encephalopathy.
How sickle cell disease happens
In healthy people, blood cells are round and flexible. But in people with sickle cell disease, blood cells are deformed and cause a range of health problems.
CRISPR is a tool nature has been using for millions of years to edit its DNA. Think of it as a microscopic pair of scissors with the ability to slice DNA.
What is a gene drive?
Gene drives have the potential to change the genetic makeup of entire populations, like mosquitos that carry malaria.
What are Zoonoses?
Zoonoses are diseases or infections that transmit from animals to humans. Here are some examples.
What are Beta-Amyloid plaques?
Inside a healthy brain, proteins called beta-amyloids are destroyed; in the brains of people with Alzheimer's disease, they are not and accumulate to form sticky plaques.
The agony of withdrawal
Matt Ganem, a former addict, explains the excruciating process of opioid withdrawal.
How does the Lariat device work?
The FDA hasn't cleared a medical device called the Lariat for any heart procedure. Yet it's been used in thousands of cardiac surgeries. Here's how the Lariat works.
The human genome was never actually finished
The headline read: "Scientists Say Human Genome is Complete." The truth is that that's not true.
This is how music gets into your brain
Dr. Charles Limb, a surgeon and a musician, shows exactly how your brain takes in music and converts it to something you can understand.
What is sepsis?
It is a life-threatening illness that often occurs in people who are hospitalized. Here's how it works.
Climate: What's at stake for your health
Ages before humans began to contributing to climate change, the climate system created the perfect conditions for human existence. But those perfect conditions are changing, and we are playing a part in that.
Animation: The Secretive World of Drug Pricing
How do we know how much prescription drugs cost? We don't, as consumers. That's all thanks to a complex, secretive pricing process between drug companies and a group called "pharmacy benefits managers" or PBMs.