Tag «TED»

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 …

Where did Russia come from? – Alex Gendler

Where did Russia come from? – Alex Gendler

Where did Russia come from, why is it so big, and what are the differences between it and its neighbors? The answers lie in an epic story of seafaring warriors, nomadic invaders, and the rise and fall of a medieval state known as Kievan Rus. In the first millennium, a large group of tribes spread …

The power of introverts | Susan Cain

The power of introverts | Susan Cain

When I was nine years old, I went off to summer camp for the first time. And my mother packed me a suitcase full of books, which to me seemed like a perfectly natural thing to do. Because in my family, reading was the primary group activity. And this might sound antisocial to you, but …