. >> steven baker whose latest ok, "hop, skip, go" looks at how technology is changing communication. watch the communicators tuesday on c-span 2. >> national history day is a program that culminates in a student competition. students are encouraged to choose a top nick history p. that can be anything. world history. local. national. ancient, modern, everything in between. as long as they are interested in it and then they go out and they find -- they do research d they find the resources to tell them the story and also figure out the significance of their topics in history. they are going into archives and into museums, into libraries and sifting through primary sources, secondary sources and thinking critically about that why their opic was important in history. we have had conflict and compromise, taking a stand. all kinds of different angles and things for kids to look at. this year it is triumph and tragedy. they have been choosing topics tra range from indian treaties helen keller,i to partition of india. you name it. they are choosing really fascinating and interesting topics a

. >> steven baker in -- stephen baker in "hop skip go" you have a futuristic vision where highways maybe the 405 in l.a. would be a bike path or walking path or return to nature. stephen: right. i think it's going to be a while before the 405 becomes a bike path. the idea is -- and helsinki is doing this. the idea is that if you have more people using -- not using cars, using other options to move around, then you can -- you won't need as many parking lots. the city -- the county of los angeles has an immense amount of parking. i think it's five times the area of paris in parking lots in san francisco, i mean, in los angeles. that's an enormous opportunity r parks, schools, swimming pools, malls, whatever -- whatever you want that doesn't have to be like that. in helsinki they have this venture that's called mobility as a service. and the idea is that you open yourself -- you open an app on a cell phone. it tells you how to get someplace and it has all of the connections. and they've got a lot of transit in helsinki. and it's all paid for with a monthly subscription. the idea is that if

on communicators, steven baker talks about book on the future f transportation and later analysts discuss issues that they cover along the u.s.-mexican border. > joining us from montana is brandon judd. oining us here in our studios in washington, rebekah maureen covers politics for usa today the first line of questioning, stephen -- of thent managing editor "washington times." > brandon, border apprehension dramatically wn from the peak of the surge in may and june. what happened? down and ose numbers maybe most importantly, who gets credit for that? >> you first have to take a look at the driving factor that pulls people to come to the united main illegally, and the magnet that we call it is the catch and release program. people cross the board illegally and they know hey are just going to be released into the interior of the united states to wait for an deportation hearing they -- people tend to cross our borders illegally in large numbers. ever since the u.s. government tarted the migrant protection protocols or the mexico program decreased rs have dramatically because people don't wa

on communicators, steven baker talks about book on the future f transportation and later analysts discuss issues that they cover along the u.s.-mexican border. > joining us from montana is brandon judd. oining us here in our studios in washington, rebekah maureen covers politics for usa today the first line of

. >> steven baker whose latest ok, "hop, skip, go" looks at how technology is changing communication.he communicators tuesday on c-span 2. >> national history day is a program that culminates in a student competition. students are encouraged to choose a top nick history p. that can be anything. world history. local. national. ancient, modern, everything in between. as long as they are interested in it and then they go out and they find -- they do research d they find the resources to tell them the story and also

. >> steven baker whose latest book looks at how technology is changing transportation. watch the communicators tonight at 8:00 p.m. eastern on c-span 2. ♪ susan: margaret o'mara, what will readers get in your new book, "the code"? professor o'mara: what they will get, is a biography of silicon valley itself, and the modern american technology industry tself. the modern american technology industry itself. there are many people and i have been studying this region for so long and this industry for so long and people always ask, what is the silicon valley secret? how do you build another one? i set out to answer those questions for them. susan: yours is the story of 75 years of government support and encouragement of the tech industry. i want to show you a clip of where we are today. this is from last year on capitol hill with mark zuckerberg. in front of the senate panel. let's watch. >> car companies face a lot of competition. if they make a defective car, it can get into the world and people will buy another one. is there an alternative to facebook in the private secto

. >> steven baker whose latest book looks at how technology is changing transportation.

. >> steven baker whose latest book, hop, skip and go look at how technology is changing transportation. watch "the communicators" tonight at 8:00 p.m. eastern on c-span2. now, the government use of facial recognition over the next two hours customs and border protection, transportation security administration, and a secret service answer questions from the house homeland security committee. >> the committee on homeland security will come to order. the committee is meeting today to receive testimony on a department of homeland security use of a facial recognition and other biometric technologies. without objection the chair is authorized to declare the committee in recess at any point. i now recognize myself for an opening statement. good morning. the committee on homeland security is meeting to examine department of homeland security use of facial recognition and other biometric technologies. the government use of biometrics is not entirely new. for example, finger prints have been used as an identification tool for many decades. other biometrics includes dna, voice pattern and palm pr

. >> steven baker whose latest book, hop, skip and go look at how technology is changing transportation. watch "the communicators" tonight at 8:00 p.m. eastern on c-span2. now, the government use of facial recognition over the next two hours