emily: what is the myth of sal khan and what is the reality? sal: the daily life. i'm still changing diapers and cleaning burp up off the floor. the other myth is --sometimes it looks like these things just happen overnight. i don't think i'm speaking just for myself. i think i would be speaking for a lot of folks at silicon valley who've started things. you hear about their success, but they have a string of failures that get swept under the rug. i probably got dinged by 40 organizations when i was trying to get khan academy funded. it is never, kind of, as clean as it looks in the outside. emily: do you think videos can replace learning in a classroom? ♪ emily: you still create most of the videos, don't you? emily: you still create most of the videos, don't you? sal: i still create a large number of videos. it's one of the things that keeps me happy. emily: so how many videos have you made, personally? sal: i think around 4000 videos. most of what we have been investing in is an extension of some of that software that i started with my cousins in 2005. where it's

khan -- kanye, all falls down. it fits into the groove there. brian washington, thank you for your request on sal's traffic jams.event. it's something that's not happened in 32 years. this weekend, a supermoon will be part of a lunar eclipse. joining meal now live from the -- me now live from the ktvu newsroom is that man right there, astronomer jerald from the chabot space center. >> good morning. >> what can we expect to see this weekend up there? >> well, there will be a supermoon and a lunar eclipse. now, lunar eclipse is when the shadow of the earth crosses over the moon. you will see the moon rising about 7:00, maybe a little bit after 7:00 and it will be reddish in color. and it will be very large. the moon will be closer than typical. the moon's orbit is an ellipse like oval. sometimes it's close. sometimes it's far away. this particular evening, it will be close and we'll have the eclipse. >> now, quick question, will it be noticeable? >> most people probably won't notice the difference. it will be 14 inches larger than the last eclipse, but, you know, it will be already in the eclipse when the moon is