interviews and tours online by going to booktv.org and selecting c-span cities tour from the series dropdown at the top of the page or by visiting c-span.org/cities tour, you can also follow the c-span's cities tour with video of visit, c-span

inside of your facebook profile, in the dropdown menu, you want to click leer on settings. that will take you to this page where you click on ads. finally, click here on your categories. that's going to take you to this page, and this is where you see the full breath of information facebook is collecting on people. everything from that birthday to your traveling to your race, even things like your political inclinations. here is where you'll find that information that facebook with clean basically from your own action on the platform. >> facebook using what you posted or what you read in your news feed, deciding what your political afl yags is, even if you haven't put that on your profile. >> reporter: exactly. all of your public activity is right here. >> all right, rebecca jarvis with us tonight, thank you. and those were three simple steps, i know it was fast. we're going to post that online right after the news for you tonight. >>> in the meantime, there is still much more ahead on "world news tonight" this wednesday. the stunning video now emerging. investigators study

interviews and tours online by going to booktv.org and selecting c-span cities tour from the series dropdown at the top of the page or by visiting c-span.org/cities tour, you can also follow the c-span's cities tour with video of visit, c-span cities. [inaudible conversations] >> good evening, everyone, welcome to lamiera bookstore, we are delighted to be hosted eric motly as he share it is story of madison park a place of hope, before we get started would everyone please silence their cell phones. we are also very glad that c-span book tv is here to film this event and introducing eric this evening is dona and bill bynum, they are instrumental in setting this event and are tireless advocating for getting eric's story out there. we will give them a warm welcome, please. [applause] >> thank you all so much for coming at our invitation tonight. we are thrilled to have eric visit with us and we are calling it his first visit. i think he said use both, is that better? you hold that one. >> both. >> one is for camera. >> okay. well, as i said, we are thrilled to have eric here visiting with us an

if you go on your facebook page and take a look and go to this dropdown bar and choose settings rightettings to this location right here, it says apps, choose apps, click on apps and that will take you to all of the apps that are currently logged in with facebook. the most important thing you can do to restrict this is to turn the platform to off. that will restrict all of your apps from getting access to facebook but keep in mind this then means you can no longer log in with facebook on those apps. >> that's crazy. about a dozen apps right then, right now logged in. >> part of the legal argument will be people could have done more themselves to protect their privacy if they wanted to. >> we're trying to help everyone, right? >> yes. >> rebecca, dan, thanks so much. michael, over to you. >>> thank you, david. now to new video showing what happened just moments before that deadly uber crash involving a self-driving car. abc's diane macedo has the story. >> reporter: this dash cam video shows the horrifying seconds before a self-driving uber hit and killed a pedestrian in arizona. tempe

all of that is in the settings dropdown menu on facebook. ladies, back to you. >> thank you, tom. >>> let's get the first check of the weather. mr. roker is across the studio. >> we have severe weather to talk about for the second day in a row. this is seymour, texas. you can see golf ball size hail coming down, causing massive problems. in fact, folks losing control of vehicles. a mess. we have more of the same today. firing up from detroit to san angelo. we're looking at strong storms and it's going to get worse. this is a slow moving system. for today, we have severe weather in del rio, texas to little rock. 9 million people. tomorrow, it slowly moves east where we have up to 13 million people at risk. from corpus christi to jackson. even thursday, the lower gulf coast, morning storms with gulfport, to mobile all the way up to birmingham. we're looking at strong storming just slowly crawling along. 4 to 5 inches of rain as it comes along. flooding is a big problem. we will get to your local forecast coming up in the next 30 seconds. up in