PUBLIC RADIO 89.5 HD1 – How much can you jam into a human brain? How far can you push yourself past feelings of exhaustion? In this hour of Radiolab, we examine human limits. We talk to Ironman tri-athletes and hear the memorable tale of a man who couldn't forget. Are we limited by the size of our brain and the strength of our muscles - or will there always be a way to push ourselves just a little bit further? And what about human comprehension? As science barrels forward, will we reach the limit of human understanding?

Listen Friday evening at 8:00 on Public Radio 89.5 HD1.

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