Eduardo Paes, the mayor of Rio, gives this city infrastructure TED Talk. http://bit.ly/INJiKQ City infrastructure is the core of city growth says Eduardo Paes.

Dan Gilbert gives this TED Talk on the science of happiness. http://bit.ly/KjDpUp The science of happiness evokes human emotion in Dan Gilbert.

Tony Robbins explains human motivation in this TED Talk. http://bit.ly/IqqajB Tony Robbins tells us why we do what we do and how to improve human motivation.

Michael Norton gives this TED Talk on how to buy happiness. http://d8p.it/vVo Michael Norton says giving money to others is the way to buy happiness.

This Ancient Disease vid helps us understand Disease Plaque. http://d8p.it/vAI# Ancient Disease in tartar identify disease plaque in humans from any period.

Marcin Jakubowski gives this Open Source Tech talk. http://d8p.it/vh3# Marcin Jakubowski is devoted to open source tech and its opportunities for the future.

Laura Carstensen gives this Golden Years Video about the effects of aging. http://d8p.it/v5A Laura Carstensen argues for old age in this Golden Years Video.