chris clackum, nbc news. >>> the a's say hideki matsui won't take the field today. he has a history of knee issues. his dad was on hand in phoenix yesterday predicting at least 30 home runs and a .300 average for his sun this season. >>> the warriors are back home today when they return with a man getting a huge welcome back. guard stephen curry made his team proud dribbling and passing and shooting through an obstacle course coming in with the winning time. he got the bragging rights and helped a girl from the l.a. area win $30,000 in scholarships courtesy the boys and girls club of california. she can thank him profusely. >>> christina loren looks at the forecast for us this morning. >> good morning to you, scott. if you were able to get to the slopes yesterday i bet it was picture perfect. we have more snow on the way this week, and we are talking about snow levels coming down to 1,000 feet, even below 1,000 feet in pockets as we head to the end of this weekend. we are looking towards another round of showers thursday, friday into saturday. that's what we are loo

chris clackum, nbc news. >>> after brent and laura take over, i'm going to head over to a verizon store to see if there are lines. that's coming up at 5:00. smart phone wars could be over today, apple with the win. >>> a two-term congressman leaving capitol hill after a suggestive photo was leaked online. tracie potts is in washington with those details. >> you are here to represent people and have to be accessible. >> reporter: but not like this. a bare-chested photo to a personal ad on craigslist. this congressman is married with a child. >> everybody makes mistakes. nobody seems to be able to live with what they do. >> it is a very, very public life. wherever you go, then you are likely to be on tape. >> i hereby give notice of my resignation. >> reporter: the announcement of his resignation came just hours after the photo was posted and the flirtatious e-mails. the woman broke contact after googling him and learning he was a two-term congressman. last fall lee won 74% of the vote. >> it is a sad state of affairs when you have somebody that you are supposed to respect publicly lets y

chris clackum, nbc news. >>> it is just before 3:00 in the afternoon in cairo. thousands of people are still in tahrir square. hosni mubarak is not stepping down, much to the shock of protesters who expected him to do just that. tracie potts is in washington monitoring the situation as people in cairo are getting more frustrated by the minute. >> reporter: egypt's president is refusing to go and so are the protesters. >>> >> they are stubborn as well just like president hosni mubarak. >> reporter: even president obama thought he would step down. >> history is unfolding. the moment of transformation is taking place. >> reporter: but mubarak won't budge turning over command to his vice president but vowing to stay on until september. disappointment in cairo and here in the u.s. >> well, we honestly expected him to resign today but he didn't. it was such a letdown. >> reporter: what happens now? will a coo force him out? >> there will be violence because of the danger. the stakes are higher. >> reporter: the u.s. is pushing but promises not to interfere. >> not onl

here's nbc's chris clackum. >> reporter: at every major crossroad in the country who is behind the common traffic signal? >> it was invented -- it was patented in 1923 by garrett morgan. >> reporter: garrett morgan was living in cleveland at the time when he witnessed a traffic accident. >> he thought, hey, there's got to be a way for people to control the flow of traffic. >> reporter: so he came one a t-shaped non-electric hand-cranked traffic signal. the forerunner of today's modern traffic light. it was also the early 1900s a young inventer in virginia came one the idea of a chair that folded. >> and nathaniel alexander patented the design for a folding chair. that is the precursor to many of the chairs we use today. >> reporter: the first idea for the fitting sheet used in homes and hotels around the world came from an african-american woman bertha burman in 1959. the predecessor of the modern golf tee was patented by a dentist, george grant, who was also one of the first blacks to graduate from harvard. kudos if you are picking up on a theme here. it is black history one and aol's bl