At what moment are you dead?

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TED-Ed Original Lessons At what moment are you dead? - Randall Hayes Animation by Anton Bogaty For as far back as we can trace our existence, humans have been fascinated with death and resurrection. But is resurrection really possible? And what is the actual difference between a living creature and a dead body anyway? Randall Hayes delves into the scientific theories that seek to answer these age-old questions. View full lesson » The 2,400-year search for the atom - Theresa Doud Animation by TED-Ed How do we know what matter is made of? The quest for the atom has been a long one, beginning 2,400 years ago with the work of a Greek philosopher and later continued by a Quaker and a few Nobel Prize-winning scientists. Theresa Doud details the history of atomic theory. View full lesson » How to create cleaner coal - Emma Bryce  Animation by Artrake Studio It takes a lot of fuel to heat our homes, preserve our food, and power our gadgets. And for 40 percent of the world, cheap, plentiful coal gets the job done. But coal also releases pollutants into the air, causing environmental damage like acid rain and serious health problems. Can we create a cleaner version of coal? Emma Bryce details the three ways we might strip coal of its foul forces. View full lesson »

TED-Ed Selects To This Day Project - Shane Koyczan View full lesson   Featured Blog Post Breaking down big data TED-Ed Community Encouraging introverted students TED Talk Lesson A warm embrace that saves lives - Jane Chen View full lesson TED-Ed Tumblr What makes tattoos permanent? - Claudia Aguirre