tonight a conversation with salman khan. he is part of the national conversation about how we improve schools. his goal of providing a free world-class education to anyone, anywhere, is ambitious, to be sure. his success has landed him on the top 100 list can receive approval from the gates foundation. our conversation with salman khan, coming up right now. >> there is a saying that dr. king had that said there is always the right time to do the right thing. i try to live my life every day by doing the right thing. we know that we are only halfway to completely eliminating hunger and we have work to do. walmart committed $2 billion to fighting hunger in the u.s. as we work together, we can stamp hunger out. >> and by contributions to your pbs station from viewers like you. thank you. tavis: if you think they are not any big ideas out there, salman khan is a man with a big idea. he founded the free nonprofit khan academy to provide free education to anyone, anywhere. he has delivered more than 45 million lessons today. salman

join me next time for a conversation with salman khan on his unique ideas about how to better educate kids around the world. that is next time. we will see you then. >> there is a saying that dr. king had that said there is always the right time to do the right thing. i try to live my life every day by doing the right thing. we know that we are only halfway to completely eliminating hunger and we have work to do. walmart committed $2 billion to fighting hunger in the u.s. as we work together, we can stamp hunger out. >> and by contributions to your pbs station from viewers like you. thank you. >> be more. >> be more. >> i'm ric edelman. ever dreamed of starting your own restaurant?

. >> when it comes to keeping america great, salman khan is a bit of an expert with an mba from harvardcated himself to education. he's founder of the khan academy but his youtube channel has over 3,000 educational videos on everything from physics to history. his new book is titled "the one world schoolhouse." he's also on "time" magazine's list of 100 most influential people in the world. welcome. you are the most popular teacher in the history of planet earth. it's undeniable. the stats don't lie. is it four million people now watched your video lessons for want of a better phrase, right? >> that's right. seven million. we're not just videos, we have interactive exercises. it's not just me anymore. >> seven million people around the world will go online to see you give effectively a lesson. >> i give lessons, we have a few other folks who are doing it. we also have an interactive platform. it's all of the above. our team is 36 people. it's not seven million just for me. >> stop being so modest. this is not what you're here for. this is to celebrate you. it's a fascinating proposition