sal: you can imagine kids in africa or a slum in calcutta getting access to this kind of knowledge. every albert einstein we found, how many did we not find? how many have been squandered because they didn't learn to read or get a good education. imagine if we could increase that by a order of magnitude, by a factor of 10 number of albert einsteins in the world. the number of people that can think about alternative energy. this could be a force multiplier like we have never seen. emily: do you think videos can replace learning in the classroom? sal: if learning in the classroom is about information dissemination, videos can do that. in some ways, it is more bite sized and on demand. i don't think it means the physical classroom goes away. it is more of a value change sto. if students get their information at their own time and pace, the physical classroom can now be used for real human interaction. emily: critics have said the videos can be repetitive. sal: i am the last person to force videos on everyone. i think they are the least important part of your education experience. if yo

. >> i've been to mumbai, calcutta, sunderbands, rajasthan, kerala.oad. ♪ -- captions by vitac -- www.vitac.com >>> yes or no. it's morning in greece where thousands are sharply divided over how they will vote in a referendum that will decide the future of their country. >>> in the philippines, rescue workers find more victims from a capsized ferry. >>> and a worldwide terror alert for american independence day. why u.s. authorities are ramping up security for the fourth of july. and happy fourth to you and welcome to our viewers in the united states and around the world. i'm natalie allen and this is "cnn newsroom."

in: managing a kid in a slum in calcutta who gets access to a phone or tablet device.einstein we found, think of how many we didn't find. how many got squandered because they did not need or get an education, etc. imagine we could increase by order of magnitude if factor of 10 the number of albert einstein's in the world, the number of people who could do cancer research, who could think about alternative energy? this could be a force multiplier. emily: do you think it could replace learning in a classroom? videos in some ways can do that because it is more bite-size and on-demand. able to move up the value chain. if they are able to get information at their own time and pace and feedback at their own time and pace, then the physical classroom can be used for real interaction. i'm the last person to force videos on anyone. i will be the first to say they are the least a part -- least important part of your educational experience. when you need information, it's great to be able to look it up. but the real learning will be when you engage in exercises, and then when you

in calcutta, it happens often during the monsoon, but that was a scene from yesterday and the day before. the rain came down incessantly. it was a storm through the north right into kashmir before it finally dispersed. it did a similar thing in deli and that was the picture in deli not long ago. that bright additional cord is a proper storm, more than one single thunderstorm, causing flashing floods wherever i did went. it caused them where it shouldn't ought to. this is an army base in the hills and it was swept through. unfortunate, they need their help, that is where it hit. things are temporarily died down. the same line is vulnerable to showers but nothing too dramatic. the western gap much the same thing. the slight changes in the weather in the middle east, as well. the humidity's come up, a lot more clouds in the skies. temperature-wise pretty hot abu dhabi 47. richelle. >> still ahead a feud that's cost thousands of lives why fear and suspicion remain between farmers and herdsmen in nigeria. >> i'm in mumbai. we'll look at the fight over the state government decision to start re

two weeks there and observed what was going on at the mother house and the various clinics around calcutta>> did you ever get to speak to mother teresa, a? >> i did. i don't really remember the content of the conversation. >> she wasn't scolding you, was she? >> i don't think so. not that time. what i did observe rather acutely is that the number of people who came from all over the world to get this close to that woman -- >> a saint. >> at the time a living saint. she was aware of it. she knew the power she had to make money for her missionary her charity, her sisters. >> i wish i had met her. i never had the opportunity. you came off your world trip. how long did the world trip take? >> ten months. >> takes you to cnn. just because they like -- >> i do an audition in atlanta. they test your skills. part of the reason why they decided to hire me was because i could turn my resume over and write down all the countries i had traveled to. >> sure. that's invaluable. >> if you want to see just how much change is taking place, all you have to do is walk down this street in saigon. >> then you

internet crew is going to attack you and me, we're mean guys and civility doesn't matter, they want calcuttaall over the place doing everything. this is the philosophy. it's hard to believe but that is their basic philosophy. >> it is sad. we are compassionate. we don't want people like that and it's unfortunate. i was criticized for the penn state piece. >> all we were doing is reporting. >> i didn't interview any white homeless people there was only black homeless people. maybe there is more diversity this time. it doesn't make sense. >> the thing is that it's all society's fault and you don't hold anybody accountable for whatever they do because it's not their fault. but he we believe in -- that this should have public housing and should be taken some place if they are mentally deficient and treated humanely but they shouldn't be allowed to destroy neighborhoods and that's what's going on here. >> jesse watters everybody. joe namath doing a righteous thing. the tip moments away. benny's the oldest dog in the shelter. he needed help all day so i adopted him. when my back pain flared up, we

. >> so after 30 hours on a train, we finally ended up in calcutta. >> narrator: here, gram- negativese spreading in frightening ways and coming from unexpected places. >> i wanted to experience another culture and put myself in an environment where i was serving, where i was helping people. i think, uh... india ended up changing me a lot more than i could have ever changed india. eight little monkeys jumping on the bed. >> narrator: he had come here with a mission group to work in orphanages. >> the momma called the doctor and the doctor said, "no more monkeys jumping on the bed." >> narrator: one morning, the group headed off to work at one of those orphanages, a mother teresa home. >> it was in the slums of the slums, really, where this orphanage was, so we had to walk through all of these narrow streets that i had never walked through before. >> and we basically took a shortcut through the train station. so you crossed over the tracks and then we were walking adjacent to the train tracks. and as we were going under an overpass... >> i was in the very back, walking, and all of a sud

on like calcutta isis simply tells anyone who will listen over social media kill where you are and they actively seeking troubled souls. "the target people people with troubled backgrounds people with substance abuse problems a system is not carry out the one little bit the. >> reporter: followers of potential attackers and south america "issues related to this are all across the country hundreds of investigations try and understand where someone as on the spectrum between consumer of this poison on twitter to an actor. where are they on the spectrum. >> catherine: dog day. kron 4's vicki liviakis takes us to some of the bay area's best hot dog stands in tonight's dine and dish. and next. the secretary of state points. ♪ ♪ ♪ it took serena williams years to master the two handed backhand. but only one shot to master the chase mobile app. technology designed for you. so you can easily master the way you bank. >> grant: a picture of what to show you zero fire fire is caught a fish shop down the track now play here into a fire hall fifth recess account class bill and close overnight and th