Using examples from vacations to colonoscopies, Nobel laureate and founder of behavioral economics Daniel Kahneman reveals how our "experiencing selves" and our "remembering selves" perceive happiness differently. This new insight has profound implications for economics, public policy -- and our own self-awareness.

Noam Chomsky is a lot of things: cognitive scientist, philosopher, political activist and one of the fathers of modern linguistics, just to name a few. He has written more than 100 books and given lectures all over the world on topics ranging from syntax to failed states. In the infographic below, we take a look at some of his most well-known theories on language acquisition as if he were presenting them himself.

Playing sound effects both pleasant and awful, Julian Treasure shows how sound affects us in four significant ways. Listen carefully for a shocking fact about noisy open-plan offices. (Recorded at TEDGlobal University, July 2009, Oxford, UK. Duration: 5:47)