Are intelligent people more prone to depression?

Are intelligent people more prone to depression? Will we ever exceed the speed of light?
24 July 2015
Presented by Chris Smith, Redi Tlhabi

Depressed man

A depressed man

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Are intelligent people more prone to depression? Will we ever exceed the speed of light? What can survive inside a human stomach? Can rhymes help you to learn new things? How is the brightness of a light measured? How do bikes steer? Are balding men more prone to prostate cancer? Plus, eye drops that can treat cataracts.

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