Remarkable metals, how shape memory alloys work - Ainissa Ramirez

Every day, we use materials from the earth without thinking, for free. But what if we had to pay for their true value: would it make us more careful about what we use and what we waste? Think of Pavan Sukhdev as nature's banker -- assessing the value of the Earth's assets. Eye-opening charts will m…

View full lesson: http://ed.ted.com/lessons/music-and-creativity-in-ancient-greece-tim-hansenYou think you love music? You have nothing on the Ancient Greek obsession. Every aspect of Greek life was punctuated by song: history, poetry, theater, sports and even astronomy. In fact, music was so impor…

View full lesson: http://ed.ted.com/lessons/what-happens-when-you-get-heat-stroke-douglas-j-casaHave you ever suffered from exertional heat stroke? This condition is caused by intense activity in the heat and is one of the top three killers of athletes and soldiers in training. Douglas J. Casa expl…

An animated interpretation of William Shakespeare's poem "All the World's a Stage"Uploaded 02-02-19--For an analysis of this poem, watch this video: http://bit.ly/TEDEdShakespeareAnalysisThis animation is part of our series, "There's a Poem for That," which features animated interpretations of poem…