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TED-Ed Blog

Why do we knock on wood?

Chances are you’ve knocked on wood in the past month. But, really, why? Here’s one origin...

Fact-checking 101

What are facts? Facts are the truthful answers to a reporter’s 5 key questions: who, what, when,...

How to lead a brainstorm

Brainstorming was invented in the 1930s as a practical idea-generation technique for regular use...