TED-Ed
TED-Ed: Which sunscreen should you choose? - Mary Poffenroth
Sunscreen comes in many forms, each with its own impacts on your body and the environment. With so many options, how do you choose which sunscreen is best for you? To answer that question, Mary Poffenroth explains how sunscreens work and...
TED-Ed
TED-Ed: How does chemotherapy work? | Hyunsoo Joshua No
During World War I, scientists were trying to develop an antidote to the poisonous yellow cloud known as mustard gas. They discovered the gas was irrevocably damaging the bone marrow of affected soldiers. This gave the scientists an...
TED Talks
Nandan Nilekani: Ideas for India's future
Nandan Nilekani, the visionary co-founder of outsourcing pioneer Infosys, explains four brands of ideas that will determine whether India can continue its recent breakneck progress.
TED-Ed
TED-Ed: How does caffeine keep us awake? - Hanan Qasim
Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven't had enough sleep - but it can...
TED Talks
TED: We can make COVID-19 the last pandemic | Bill Gates
Building a pandemic-free future won't be easy, but Bill Gates believes that we have the tools and strategies to make it possible -- now we just have to fund them. In this forward-looking talk, he proposes a multi-specialty Global...
TED-Ed
TED-Ed: How to 3D print human tissue | Taneka Jones
There are currently hundreds of thousands of people on transplant lists, waiting for critical organs like kidneys, hearts and livers that could save their lives. Unfortunately, there aren't enough donor organs available to fill that...
SciShow
Why Is Salt So Bad for You, Anyway?
You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?
TED-Ed
TED-Ed: How stress affects your brain - Madhumita Murgia
Stress isn't always a bad thing; it can be handy for a burst of extra energy and focus, like when you're playing a competitive sport or have to speak in public. But when it's continuous, it actually begins to change your brain. Madhumita...
TED Talks
TED: Lessons on leaving the world better than you found it | Sophie Howe
Sophie Howe is the world's only future generations commissioner, a new kind of government official tasked with advocating for the interests of generations to come and holding public institutions accountable for delivering long-term...
TED-Ed
TED-Ed: Why do people have seasonal allergies? - Eleanor Nelsen
Ah, spring. Grass growing, flowers blooming, trees budding. For those with allergies, though, this explosion of new life probably inspires more dread than joy. So what's behind this annual onslaught of mucus? Eleanor Nelsen explains what...
TED-Ed
What causes cavities? - Mel Rosenberg
When a team of archeologists recently came across some 15,000-year-old human remains, they made an interesting discovery: the teeth of those ancient humans were riddled with holes. So what causes cavities, and how can we avoid them? Mel...
SciShow
6 Popular "Home Remedies" That Don't Actually Work
Studies have found that even some of the most well-known home remedies don’t work, and sometimes they do more harm than good. Chapters HONEY FOR ALLERGIES BUTTER ON THERMAL BURNS 2:15 VINEGAR FOR HEAD LICE 4:42 4 IPECAC FOR POISONING...
SciShow
Social Interaction and the 'Bliss Molecule'
This week on SciShow News, scientists found that social interaction triggers the production of the “bliss molecule” in mice. Plus, eating sugar is about more than just the calories.
TED Talks
Laura Carstensen: Older people are happier
In the 20th century we added an unprecedented number of years to our lifespans, but is the quality of life as good? Surprisingly, yes! Psychologist Laura Carstensen shows research that demonstrates that as people get older they become...
TED Talks
TED: How CRISPR lets us edit our DNA | Jennifer Doudna
Geneticist Jennifer Doudna co-invented a groundbreaking new technology for editing genes, called CRISPR-Cas9. The tool allows scientists to make precise edits to DNA strands, which could lead to treatments for genetic diseases ... but...
TED Talks
Mitchell Besser: Mothers helping mothers fight HIV
In sub-Saharan Africa, HIV infections are more prevalent and doctors scarcer than anywhere else in the world. With a lack of medical professionals, Mitchell Besser enlisted the help of his patients to create mothers2mothers -- an...
TED-Ed
TED-Ed: The surprising cause of stomach ulcers - Rusha Modi
It's a common misconception that stomach ulcers are caused by emotional upset, psychological distress, or spicy food. Yet no convincing study has ever demonstrated that these factors directly cause ulcer disease. So what does cause...
TED-Ed
TED-Ed: Why doesn't anything stick to Teflon? - Ashwini Bharathula
Teflon was in the spacesuits the Apollo crew wore for the moon landing, in pipes and valves used in the Manhattan project, and it may be in your kitchen, as the nonstick coating on frying pans and cookie sheets. So what is this slippery...
TED-Ed
TED-Ed: Can steroids save your life? | Anees Bahji
Steroids: they're infamous for their use in sports. But they're also found in inhalers, creams to treat poison ivy and eczema, and shots to ease inflammation. The steroids in these medicines aren't the same as those used to build muscle....
SciShow
Does Radiation Make Air Travel Dangerous?
Radiation is all around us, and when you travel by plane, you're exposed to cosmic radiation. So what does this mean for our health? Does air travel expose us to unsafe radiation levels? Check out this episode to see how flying among...
TED-Ed
TED-ED: Why do animals have such different lifespans? - Joao Pedro de Magalhaes
For the microscopic lab worm C. elegans, life equates to just a few short weeks on Earth. The bowhead whale, on the other hand, can live over two hundred years. Why are these lifespans so different? And what does it really mean to 'age'...
TED-Ed
TED-ED: Rosalind Franklin: DNA's unsung hero - Claudio L. Guerra
The discovery of the structure of DNA was one of the most important scientific achievements in human history. The now-famous double helix is almost synonymous with Watson and Crick, two of the scientists who won the Nobel prize for...
TED Talks
Manu Prakash: A 50-cent microscope that folds like origami
Perhaps you’ve punched out a paper doll or folded an origami swan? TED Fellow Manu Prakash and his team have created a microscope made of paper that's just as easy to fold and use. A sparkling demo that shows how this invention could...
TED-Ed
TED-ED: Who's at risk for colon cancer? - Amit H. Sachdev and Frank G. Gress
Colon cancer is one of the leading causes of cancer and cancer death in the world. It is also one of the most preventable types of cancer, as it often takes about ten years for a small polyp to grow and develop into a cancerous one. So...