fluffy sand-like from a beach or something it is heavy dirt. >> reporter: the 50-year-old man from oakland was taken to the hospital. he was complaining of pain in his legs and pelvis. he was talking, conscious, he looks like he's going to be okay. investigators say he was digging a 10 foot deep trench when the dirt collapsed about 5:30 yesterday afternoon. osha investigators will be asking questions was he a licensed contractor or just a friend helping out. why didn't he shore up the dirt around him as he was digging it out? investigators will be looking into this. at this point, this man is considering himself very lucky. amy hollyfield, abc7 news. >>> he was indeed, thank you. 5:03. san francisco's st. ignatius prep will be shutdown until monday after more than 350 students and teachers have come down with a nasty stomach virus. officials planned to cancel classes for one day to cleanup around the campus. the problem got too big. terry mcsweeney, is live in the sunset district. >> reporter: big and possibly getting bigger. city public health officials are certain that gastroenteritis what we call stomach flu is what the illness is. where it came from,

and but you will not see me in fluffy leggings. [laughter] that is fine for anyone that prefers them. i do not know. there are just a lot of people that do pay a lot of attention. i am one of them. i suppose, if you wanted to have that special, that look, you could spend a lot of money on it. >> i was going to ask you this, final question, but he may have answered it. what is your 60-second the idea to change the world? it sounds like it is get to the right gear. >> yeah. if you can just get the right gear, you can -- change the world? >> not change it in 60 seconds. >> i don't know. >> say how to change it. >> i don't know. >> for the better. >> just connect. just connect. >> all right. you have 54 seconds left. >> fluffy leggings. >> all right. let's have a big round of applause for larry. [applause] and this meeting of the commonwealth club is officially adjourned. [applause]