TED-Ed
TED-Ed: 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, and can our bodies recover if we stop? Krishna Sudhir details what happens when we smoke --...
TED Talks
TED: How we'll fight the next deadly virus | Pardis Sabeti
When ebola broke out in March 2014, Pardis Sabeti and her team got to work sequencing the virus's genome, learning how it mutated and spread. Sabeti immediately released her research online, so virus trackers and scientists from around...
TED Talks
Ernest Madu: World-class health care
Dr. Ernest Madu runs the Heart Institute of the Caribbean in Kingston, Jamaica, where he proves that -- with careful design, smart technical choices, and a true desire to serve -- it's possible to offer world-class healthcare in the...
TED-Ed
TED-Ed: What is dust made of? - Michael Marder
Less than a tenth the size of an ant, a dust mite's whole world is contained in the dusty film under a bed or in a forgotten corner. This realm is right under our noses, but from our perspective, the tiny specks of brilliant color blend...
TED-Ed
TED-Ed: Could we survive prolonged space travel? - Lisa Nip
Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and bone growth, and high doses of radiation cause irreversible mutations. As we seriously consider the human species becoming space-faring, a big...
TED Talks
TED: A new way to fund health care for the most vulnerable | Andrew Bastawrous
In 2011, eye surgeon and TED Fellow Andrew Bastawrous developed a smartphone app that brings quality eye care to remote communities, helping people avoid losing their sight to curable or preventable conditions. Along the way, he noticed...
TED-Ed
TED-ED: Is radiation dangerous? - Matt Anticole
When we hear the word radiation, it's tempting to picture huge explosions and frightening mutations. But that's not the full story - radiation also applies to rainbows and a doctor examining an X-ray. So what is it, really, and how much...
TED-Ed
TED-Ed: How does laser eye surgery work? | Dan Reinstein
In 1948, Spanish ophthalmologist Jose Ignacio Barraquer Moner was fed up with glasses. He wanted a solution for blurry vision that fixed the eye itself, without relying on external aids. The surgery he eventually devised was called...
TED-Ed
TED-Ed: Why do we itch? - Emma Bryce
The average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch - but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to...
TED-Ed
TED-Ed: How does anesthesia work? - Steven Zheng
When under anesthesia, you can't move, form memories, or -- hopefully -- feel pain. And while it might just seem like you are asleep for that time, you actually aren't. What's going on? Steven Zheng explains what we know about the...
TED Talks
TED: You may be accidentally investing in cigarette companies | Bronwyn King
Tobacco causes more than seven million deaths every year -- and many of us are far more complicit in the problem than we realize. In a bold talk, oncologist Dr. Bronwyn King tells the story of how she uncovered the deep ties between the...
TED-Ed
TED-Ed: How the COVID-19 vaccines were created so quickly | Kaitlyn Sadtler and Elizabeth Wayne
In the 20th century, most vaccines took over a decade to research, test, and produce. But the vaccines for COVID-19 were cleared for emergency use in less than 11 months. The secret behind this speed is a medical technology that's been...
SciShow
How Measles Made a Comeback
SciShow News explores how a diseases that was officially eliminated in the U.S. has made a sudden comeback.
TED-Ed
TED-Ed: How do germs spread (and why do they make us sick)? - Yannay Khaikin and Nicole Mideo
Germs are found on almost every surface we come in contact with, which makes it incredibly common for our bodies to be exposed to them. But why are some of these germs relatively harmless, while others can be fatal? Yannay Khaikan and...
TED-Ed
TED-ED: The strange case of the cyclops sheep - Tien Nguyen
In the 1950s, a group of ranchers in Idaho were baffled when their sheep gave birth to lambs with only one eye. Mystified by these cyclops sheep, they called in scientists from the U.S. Department of Agriculture to investigate. What...
TED-Ed
TED-ED: Cannibalism in the animal kingdom - Bill Schutt
Until recently, scientists thought cannibalism was a rare response to starvation or other extreme stress. Well-known cannibals like the praying mantis and black widow were considered bizarre exceptions. But now, we know they more or less...
TED-Ed
TED-Ed: Why does your voice change as you get older? - Shaylin A. Schundler
The human voice is capable of incredible variety and range. As we age, our bodies undergo two major changes which explore that range. So how exactly does our voice box work, and what causes these shifts in speech? Shaylin A. Schundler...
TED Talks
Mark Kendall: Demo: A needle-free vaccine patch that's safer and way cheaper
One hundred sixty years after the invention of the needle and syringe, we're still using them to deliver vaccines; it's time to evolve. Biomedical engineer Mark Kendall demos the Nanopatch, a one-centimeter-by-one-centimeter square...
TED-Ed
TED-Ed: How your digestive system works - Emma Bryce
Constantly churning inside of you, the digestive system performs a daily marvel: it transforms your food into the vital nutrients that sustain your body and ensure your survival. Emma Bryce traces food's nine-meter-long, 40-hour journey...
TED-Ed
TED-Ed: Sugar: Hiding in plain sight - Robert Lustig
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...
TED-Ed
TED-ED: What can you learn from ancient skeletons? - Farnaz Khatibi
Ancient skeletons can tell us a great deal about the past, including the age, gender and even the social status of its former owner. But how can we know all of these details simply by examining some old, soil-caked bones? Farnaz Khatibi...
TED-Ed
TED-Ed: What makes muscles grow? - Jeffrey Siegel
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....
TED-Ed
TED-ED: How does the immune system work? - Emma Bryce
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...
TED Talks
TED: Gene editing can now change an entire species -- forever | Jennifer Kahn
CRISPR gene drives allow scientists to change sequences of DNA and guarantee that the resulting edited genetic trait is inherited by future generations, opening up the possibility of altering entire species forever. More than anything,...