Up host Chris Hayes shares what we now know that we didn't know last week, including Florida Gov. Rick Scott's governance in the Sunshine State that is taking on a "Lex Luthor-like supervillain" role.

Up host Chris Hayes shares what he now knows since the week began, including news that a federal appeals court on Thursday ruled that federal benefits cannot be denied to legally married same-sex couples.

Up host Chris Hayes summarizes the week of news after Massachusetts Sen. Scott Brown was called out for including his 23-year-old daughter on his health insurance - a provision made possible through the "Affordable Care Act" that Brown nearly derailed.

Up host Chris Hayes summarizes the news of the week, including reports that surfaced showing that student debt passed the $1 trillion mark and is growing at double the rate of the with mortgage debt during the height of crisis. 

Chris Hayes summarizes what we now know from the week of news, including a glimpse into how House Republicans embrace the church after the U.S. Conference of Catholic Bishops sent a letter criticizing the Agricultural committee's proposed budget, inspired by Rep. Paul Ryan, for failing "a moral test" in cutting food stamp funds.

Up host Chris Hayes discusses a newly found letter showing that in 2003, then Massachusetts Gov. Mitt Romney urged for "action for climate protection." Now, Romney the Republican presidential candidate attests that "we don't know what's causing climate change."

MSNBC host Chris Hayes and his panel share what they know from the week's news, including reports that the number of justified homicides in Florida has increased since the state's "Stand Your Ground" bill was signed into law.

MSNBC host Chris Hayes and his panel share what they learned this week, including the many news stories outlining the cultural divide between how the rich and the poor interact with one another.

Up host Chris Hayes shares what he learned this week, including the fall-out from Michigan senate candidate Pete Hoekstra's political ad that left the actress starring in the clip apologizing for her role.

Last night Chris hosted special MSNBC live coverage of the Iowa caucus results. Joining him were MSNBC contributor Melissa Harris-Perry, "Majority Report" host Sam Seder, senior writer for Newsweek/The Daily Beast Michelle Goldberg, and senior editor at National Review Ramesh Ponnuru. Find out what Chris and his guests now know that they didn't know before the Iowa caucus.

-Brett Brownell (@brettbrownell) is video and web producer for Up with Chris Hayes.

Last week we began inviting your suggestions for Now We Know - our Saturday segment reviewing our favorite stories of the week. Our most recent Now We Know included the Romney campaign's blatant misrepresentation of the president's words in their campaign ad, a distinction between encampments deserving and undeserving of rough police treatment, and in honor of the Thanksgiving holiday, what Chris is thankful for.

What local or national stories caught your eye this week?

To submit your ideas, email us at upwithchris@msnbc.com with a subject line "Now We Know", or post a comment below. Include link(s) to the story so we can verify authenticity, and be sure to tell us how you'd like to be credited if we choose your Now We Know suggestion.

Keep in mind, we do see a lot of stories ourselves, so please remember not to get upset if we discuss your story and don’t credit you. But if it’s something you bring to our attention first, we will of course give you credit.

We look forward to hearing from you and reading your submissions!

-Brett Brownell (@brettbrownell) is video and web producer for Up with Chris Hayes which airs on MSNBC Saturday and Sunday morning.