Brenda Buttner, host of Fox News Channel's "Bulls and Bears," has passed away at age 55 after a battle with cancer. Based in New York, she joined the network in 2000, after hosting CNBC's "The Money Club" and serving as the network's Washington correspondent. Buttner graduated with honors from Harvard University with a B.A. in social studies and went on to become a Rhodes Scholar at Oxford University, where she graduated with high honors in politics and economics.