Tag «TED»

The complex geometry of Islamic design – Eric Broug

The complex geometry of Islamic design – Eric Broug

In Islamic culture, geometry is everywhere. You can find it in mosques, madrasas, palaces and private homes. This tradition began in the 8th century CE during the early history of Islam, when craftsmen took preexisting motifs from Roman and Persian cultures and developed them into new forms of visual expression. This period of history was …

The true story of ‘true’ – Gina Cooke

The true story of ‘true’ – Gina Cooke

Everyone knows that stories are made up of words, from short poems to epic novels. But did you know that a single word itself can tell an entire story? You see, just as we can look at a story’s plot, setting, and characters, we can also study the history of an individual word, where it …

The fascinating history of cemeteries – Keith Eggener

The fascinating history of cemeteries – Keith Eggener

Spindly trees, rusted gates, crumbling stone, a solitary mourner— these things come to mind when we think of cemeteries. But not so long ago, many burial grounds were lively places, with blooming gardens and crowds of people strolling among the headstones. How did our cemeteries become what they are today? Some have been around for …

Why sex really matters | David Page | TEDxBeaconStreet

Why sex really matters | David Page | TEDxBeaconStreet

Translator: Jenny Lam-Chowdhury Reviewer: Capa Girl I would like to talk with you about sex and disease, but perhaps not what you’re thinking. So, now that I’ve gotten your attention, I’d like to tell you about something that’s really fundamental. I’d like to tell you about a connection between sex and disease that is very …

Why do we sleep? | Russell Foster

Why do we sleep? | Russell Foster

What I’d like to do today is talk about one of my favorite subjects, and that is the neuroscience of sleep. Now, there is a sound — (Alarm clock) Ah, it worked! A sound that is desperately familiar to most of us, and of course it’s the sound of the alarm clock. And what that …

How tsunamis work – Alex Gendler

How tsunamis work – Alex Gendler

In 479 BC, when Persian soldiers besieged the Greek city of Potidaea, the tide retreated much farther than usual, leaving a convenient invasion route. But this wasn’t a stroke of luck. Before they had crossed halfway, the water returned in a wave higher than anyone had ever seen, drowning the attackers. The Potiidaeans believed they …

Steve Silberman: The forgotten history of autism

Steve Silberman: The forgotten history of autism

Just after Christmas last year, 132 kids in California got the measles by either visiting Disneyland or being exposed to someone who’d been there. The virus then hopped the Canadian border, infecting more than 100 children in Quebec. One of the tragic things about this outbreak is that measles, which can be fatal to a …