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Joan Detz

Why do some speakers succeed while many bore their audiences and lose their listeners? Speaking coach Joan Detz has worked with top clients for more than 15 years and has the answers. In this useful...

Abhijit V. Banerjee, Esther Duflo

For more than fifteen years Abhijit V. Banerjee and Esther Duflo have worked with the poor in dozens of countries spanning five continents, trying to understand the specific problems that come with...