The immortal cells of Henrietta Lacks - Robin Bulleri

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View full lesson: http://ed.ted.com/lessons/the-immortal-cells-of-henrietta-lacks-robin-bulleri

Imagine something small enough to float on a particle of dust that holds the keys to understanding cancer, virology, and genetics. Luckily for us, such a thing exists in the form of trillions upon trillions of human, lab-grown cells called HeLa. But where did we get these cells? Robin Bulleri tells the story of Henrietta Lacks, a woman whose DNA led to countless cures, patents, and discoveries.

Lesson by Robin Bulleri, animation by Brandon Denmark.

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Why do blood types matter? - Natalie S. Hodge

View full lesson: http://ed.ted.com/lessons/why-do-blood-types-matter-natalie-s-hodge

It’s often said that despite humanity’s many conflicts, we all bleed the same blood. It’s a nice thought, but not quite accurate. In fact, our blood comes in a few different varieties. Natalie S. Hodge defines the four major blood types and sheds light on why some bloods can mix while others cannot.

Lesson by Natalie S. Hodge, animation by Brad Purnell.
The genius of Marie Curie - Shohini Ghose

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View full lesson: http://ed.ted.com/lessons/the-genius-of-marie-curie-shohini-ghose

Marie Skłodowska Curie’s revolutionary research laid the groundwork for our understanding of physics and chemistry, blazing trails in oncology, technology, medicine, and nuclear physics, to name a few. But what did she actually do? Shohini Ghose expounds on some of Marie Skłodowska Curie’s most revolutionary discoveries.

Lesson by Shohini Ghose, animation by Anna Nowakowska.
How a single-celled organism almost wiped out life on Earth - Anusuya Willis

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View full lesson: http://ed.ted.com/lessons/how-a-single-celled-organism-almost-wiped-out-life-on-earth-anusuya-willis

There’s an organism that changed the world. It caused the first mass extinction in Earth’s history … and also paved the way for complex life. How? Anusuya Willis explains how cyanobacteria, simple organisms that don’t even have nuclei or any other organelles, wrote a pivotal chapter in the story of life on Earth.

Lesson by Anusuya Willis, animation by Augenblick Studios.
How to unboil an egg - Eleanor Nelsen

How to unboil an egg - Eleanor Nelsen

View full lesson: http://ed.ted.com/lessons/how-to-unboil-an-egg-eleanor-nelsen

It’s so obvious that it’s practically proverbial: you can’t unboil an egg. But actually, it turns out that you can -- sort of. Eleanor Nelsen explains the process by which mechanical energy can undo what thermal energy has done.

Lesson by Eleanor Nelsen, animation by Provincia Studio.
Henrietta Lacks' 'Immortal' Impact on Medical Research

Henrietta Lacks' 'Immortal' Impact on Medical Research

Henrietta Lacks died 62 years ago, but her cells -- known as HeLa -- live on through scientific research, having led to world-changing medical advances for decades. Margaret Warner talks to Dr. Francis Collins of the National Institutes of Health about a new agreement made with the Lacks' family over control of her DNA legacy.