By 
Matt Anticole
 | 
TED-Ed Original

What's the difference between a scientific law and theory?

Chat with a friend about an established scientific theory and she might reply "Well that's just a theory." But a conversation about an established scientific law rarely ends with "Well that's just a law." Why is that? What is the difference between a theory and a law... and is one "better"? Matt Anticole shows why science needs both laws and theories to understand the whole picture.

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