Plato’s Allegory of the Cave – Alex Gendler
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Twenty four hundred years ago, Plato, one of history’s most famous thinkers, said life is like being...
The real story behind Archimedes’ Eureka! – Armand D'Angour
View full lesson: http://ed.ted.com/lessons/the-real-story-behind-archimedes-eureka-armand-d-angour
When you think of Archimedes’ Eureka moment, you probably imagine a man in a bathtub, right? As...
The sonic boom problem – Katerina Kaouri
View full lesson: http://ed.ted.com/lessons/what-causes-sonic-booms-katerina-kaouri
Objects that fly faster than the speed of sound (like really fast planes) create a shock wave...
How do dogs "see" with their noses? – Alexandra Horowitz
View full lesson: http://ed.ted.com/lessons/how-do-dogs-see-with-their-noses-alexandra-horowitz
You may have heard the expression that dogs ‘see with their noses.’ But these creature’s amazing nasal...
Why Shakespeare loved iambic pentameter – David T. Freeman and Gregory Taylor
View full lesson: http://ed.ted.com/lessons/why-shakespeare-loved-iambic-pentameter-david-t-freeman-and-gregory-taylor
Shakespeare sometimes gets a bad rap in high schools for his complex plots and antiquated language. But...
How do vaccines work? – Kelwalin Dhanasarnsombut
Learn the science behind how vaccines trigger an immune response and teach our bodies to recognize dangerous pathogens.
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The first ever...
The evolution of the human eye – Joshua Harvey
View full lesson: http://ed.ted.com/lessons/the-evolution-of-the-human-eye-joshua-harvey
The human eye is an amazing mechanism, able to detect anywhere from a few photons to a...
The great conspiracy against Julius Caesar – Kathryn Tempest
View full lesson: http://ed.ted.com/lessons/the-great-conspiracy-against-julius-caesar-kathryn-tempest
On March 15th, 44 BCE, Roman dictator Julius Caesar was assassinated by a group of about 60...
The pharaoh that wouldn't be forgotten – Kate Green
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View full lesson: http://ed.ted.com/lessons/the-pharaoh-that-wouldn-t-be-forgotten-kate-narev
Hatshepsut was a female pharaoh during the New Kingdom in Egypt. Twenty...
What do the lungs do? – Emma Bryce
View full lesson: http://ed.ted.com/lessons/what-do-the-lungs-do-emma-bryce
When you breathe, you transport oxygen to the body’s cells to keep them working, while also clearing...