i'm dorian devins and i'm margaret mittelbach and were happy to be back at symphony space. welcome to all of our regulars. for in his a first time at the sight of its any of its series and we bring sciences of all disciplines out of their labs and onto ther public stages. here they can be part of the cultural life of new york city and people like you may, in the informed come can interject and engage by scientific ideasof and discoveries and interact directly also with some of the scientists. regularcience club our hangout, our main layer is in brooklyn but at secret science club north we are back your tonight in manhattan as part of our fifth miniseries here at symphony space. so we really like to thank all the people at symphony space, the staff, particularly kathy landau, joanna thompson, rebecca whites, james and zack and wiki for helping us to expand our universe and wehe hope yours al. [applause] >> bighand for them. a very big thank you to the bar. the bars to the back into the left. they have concocted our cocktail to your or however you say it, it's called thehe at