. >>> facebook's ceo mark zuckerberg is giving his largest gift to charity so far. weiss donating a $-- he's donating $500 million in stock to the silicon valley community. this is his second donation giving since the group founded by warren buffett and bill gates. >>> this morning, six nonprofit groups shared in $1 million worth of grant money from chevron. the recipients were announced less than two hours ago at the middle school. the grants go toward groups that provide jobs and education in the rifmond community. one -- richmond community. >> this is just one more indication of how much we invest in this community. how much we believe in this community and we -- how we understand that when richmond succeeds, so does chevron. >> since the program started in 2009, chevron says more than 500,000 students and nearly 7,000 teachers have benefited. >>> very cold morning. 20s all over the place. we had freeze warnings, frost advisories. we have clear skies. now a few high clouds beginning to come in. this is the beginning of what's gonna be a lot of clouds and rain and snow