emily: susan wojcicki, ceo of youtube, thank you so much for joining us. nk you for having me. ♪ the challenges facing our world are growing all the time. how do we build a stronger economy with equal opportunity for all you come how do we build a sustainable world for generations to come? how do we hardest the power of technology? in the series, using the latest research and analysis, we will make sense of the problems of tomorrow.

emily: susan wojcicki, ceo of youtube, thank you so much for joining us. n: thank you for having me. ♪ terre: we asked some of the best minds in the world from business, government, the arts, and academia, what are the most urgent problems facing humanity, and how do we solve them? the result is "big problems/big thinkers." what is the number one major problem facing mankind? >> i think is the lack of education. >> politics has been getting dumber and dumber. >> there is a balance of green spirit. >> if we don't have a more sustaibl

susan wojcicki became employee number 16 and became the starter of the advertising business.er bosses to buy youtube for $1.65 billio