i am kristin leon, townhall's new community program curator and half at townhall in our community partner and it's my pleasure to welcome you to this evening's conversation with eugenia cheng. this is part of our science series and made possible with support from the microsoft corporation and media sponsorship. first, eugenia cheng will speak for about 35 to 45 minutes and after that we will move into time for questions. if you have a question, please use the microphone on either side of the stage to make sure your questions are concise and in question form. after questions, eugenia cheng will sign copies of her latest book, "beyond infinity". books will also be available for sale at that time and then you should come back. april is packed. with the seattle institute of the hot-- biology panel on institute of health and paul talking with 100 ways to reverse global warming and richard youngs exploration of artificial and emotional intelligence. you can find all of our programming at townhall seattle.org. finally, i would like to thank the members in our audience tonight pick your contribut

. >> kristin welker, thank you so very much from the white house. joining me now is leon panetta. the former director o of the cia, and chief of staff for president bill clinton. now the chairman of the panetta institute for public policy in monterey. thank you so much. leon. let's talk about north korea first of all. what do you expect we all are sort of on high alert because of the way that north korea marks anniversaries that are important in their culture like the founder's birthday. >> no question this is a tinderbox. has been for a long time, but we're at a time when there is a potential for provocation. with the testing of this nuclear weapon. and, you know, the words from the administration are creating even higher volume in terms of the provocations that are going on. i think we have to be careful here. this is, you know, we should not engage in any precipitous action. there is a reason no other president has pulled the trigger on north korea. you have 20 million people in seoul, that would be a target. we have a potential for a nuclear war that would take millions of liv

i am kristin leon, townhall's new community program curator and half at townhall in our community partner and it's my pleasure to welcome you to this evening's conversation with eugenia cheng. this is part of our science series and made possible with support from the microsoft corporation and media sponsorship. first, eugenia cheng will speak for about 35 to 45 minutes and after that we will move into time for questions.