up next, a physicist lisa randall. lisa randall is a at harvard and at a member of the time 100, the 100 most influential people in the world. her book is called "knocking on heaven's door." let me start by asking you a pretty straightforward question. why do you do what you do? >> part of it is probably selfish. it is a lot of fun. i like seeing how the world works and how it fits together. i like when there is some sort of order to the universe. it is like finding a truth that has some sort of return on nature to it. it is a very valuable way of thinking. it is important that we keep making progress. what i'd do is very theoretical. it won't necessarily have implications for anything that anybody is doing tomorrow. you know that there is a sense of progress in science. tavis: you spent a good part of the book, thankfully, talking about this debate that seems to be ongoing between science and religion. i had a conversation with a professor on my radio show. everywhere you look, there is a debate between science and re

up next, a physicist lisa randall. lisa randall is a physicist at harvard and at a member of the time 100, the 100 most influential people in the world. her book is called "knocking on heaven's door." let me start by asking you a pretty straightforward question. why do you do what you do? >> part of it is probably selfish. it is a lot of fun. i like seeing how the world works and how it fits together. i like when there is some sort of order to the universe. it is like finding a truth that has some sort of return on nature to it. it is a very valuable way of thinking. it is important that we keep making progress. what i'd do is very theoretical. it won't necessarily have implications for anything that anybody is doing tomorrow. you know that there is a sense of progress in science. tavis: you spent a good part of the book, thankfully, talking about this debate that seems to be ongoing between science and religion. i had a conversation with a professor on my radio show. everywhere you look, there is a debate between scie

and welcome to lisa randall. as i said, her new book is "knocking on heaven's door: how physics and scientific thinking illuminate the universe and the modern world." lisa is a professor of theoretical physics at harvard university, and is a leading theoretical physicist and expert on particle physics and cosmology. she is one of the most highly cited and influential theoretical physicists. she has appeared in discover, the economist, among many others, many other publications. she has been one of "time" magazine 100 most influential people. as i said, "knocking on heaven's door" is her second book. her first book, "warped passages" is about the mistress of the universe and dimensions. "knocking on heaven's door" is about scientific research today, specifically at the large glider, and the author's own investigation into elementary particles, string theory and cosmology into modern physics. from the core knowledge to the outer boundaries, the larger outer threshold of the universe. this is perfect to be sent, and

nice turn out and great crowd so welcome to politics and prose and welcome to lisa randall. her new book is "knocking on heaven's door" clippers and how physics and scientific thinking the eliminate the universe and of the modern world. lisa is a professor of theoretical physics at harvard university and is a leading theoretical physicist and expert on particle physics legal string theory and cosmology. she is one of the most highly cited and influential theoretical physicists. she has appeared in discovery economist this week, scientific american among many others, many other publications. she has been one of time magazine's most influential people. "knocking on heaven's door" is her second book. surfaced book warped passages is about the mysteries of the universe seen in dimensions. "knocking on heaven's door" is about scientific research today specifically at the large hadron collider. the author's investigation into elementary particles and string theory of cosmology into modern physics from the core knowledge, smallest objects to the outer boundaries, larger threshold a

tonight lisa randall and her book "knocking on heaven's door." we are excited to have her here talking about this book. before we begin if you are new here, welcome and i will quickly go over the format, what is going to happen. leases going to present her book and she will talk about her book using visuals as well. what we are going to do is be in the lights of because we are recording so if you do want to get to the corner so you will have a pretty good view of it. the talk will go for 45 minutes or so and they will have a little time for q&a from you of course. we look forward to your input. it is we are recording as i said we are going to take questions from our audience microphone in the middle aisle so if you can get to that, that would be a help and we will field questions from there. afterwards we will have a book signing up here and lisa will sign books, both of her books "knocking on heaven's door" and passage is available in the front of the store. it's a good time to silence cell phones too and that is how we will go. again, above all

join me next time for a conversation with mark bowden and lisa randall. that is next time. we will see you then. >> every community has a martin luther king boulevard. it's the cornerstone we all. it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy and remove obstacles to economic empowe.time ti me nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] >> be more. pbs.

join me next time for a conversation with mark bowden and lisa randall. that is next time. we will see you then. >> every community has a martin luther king boulevard. it's the cornerstone we all know. it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy and remove obstacles to economic empowerment one conversation at a time. nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] >> be more. pbs.

join me next time for a conversation with mark bowden and lisa randall. that is next time. we will see you then. >> every community has a martin luther king boulevard. nos the cornerstone we all'it'w it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy and remove obstacles to economic a po.time it a .me nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] >> be more. pbs.

join me next time for a conversation with mark bowden and lisa randall. that is next time. we will see you then. >> every community has a martin luther king boulevard. it's the cornerstone we all know. it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy and remove obstacles to economic empowerment one conversation at a time. nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] >> be more. pbs. 

join me next time for a conversation with mark bowden and lisa randall. that is next time. we will see you then. >> every community has a martin luther king boulevard. it's the cornerstone we all know. it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy att aemove obstacles tt rmencono empowet enone conversation at a time. nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] >> be more. pbs.