Former Mayor Pete Buttigieg currently holds a narrow lead over Senator Bernie Sanders in the chaotic Iowa Democratic Caucus with 62% of precincts reporting. Here's the latest. —Josh Petri Here are today’s top storiesThe multiple system failures during Monday’s Iowa caucus raises tough questions not just about the future of the state's role in the primary race, but the integrity of elections in the nation at large. President Donald Trump delivers the State of the Union address Tuesday night. Trump, who’s approval rating just reached a career-high of 49%, isn’t expected to mention his impeachment. The Republican-controlled Senate could acquit him of abuse of power and obstruction of Congress as early as Wednesday. China is about to find out whether its mass quarantine of 50 million people in more than a dozen cities has effectively contained the coronavirus. President Xi Jinping warned it may impact the nation’s social stability. More than 400 deaths have been reported worldwide. Tesla shares have already doubled this year. Even rivals concede Elon Musk has built a commanding lead in the EV market—and set himself up for a massive payday in the process. Some short-sellers, who have been repeatedly burned by Musk, remain unconvinced. Wall Street’s biggest global scandal just claimed one of Goldman Sachs’ most powerful dealmakers. The Fed permanently banned Andrea Vella from the industry over his alleged involvement in the 1MDB scandal. Tenants in many cities don’t like landlords. Residents of Berlin positively despise them. What’s Joe Weisenthal thinking about? The Bloomberg news director says Bitcoin believers are thrilled that the cryptocurrency is up 28% so far this year. Unfortunately, Joe says, a broader look at the crypto market shows that the rally isn’t all it’s cracked up to be. What you’ll need to know tomorrowU.S. stocks rallied as China’s market sell-off eased.Visa is planning its biggest swipe fee-changes in a decade.This CFA exam is getting shorter, more frequent and electronic.The U.S. may soon have the world’s oldest nuclear power plants.Rex Tillerson questioned whether humans can slow climate change.Instagram generated more than one quarter of Facebook sales.Dick’s Sporting Goods is trying to appeal to more women. Sponsored by the Kellogg School of Management at Northwestern University An exceptional team is more than the sum of its parts. But how much do you really know about building one? Here are 7 takeaways from the science of teamwork that can help leaders assemble and manage stellar teams. What you’ll want to read in Bloomberg GreenBrightline is the first new private company to move paying customers between American cities by rail in almost a century. It’s also far from profitable, behind on ridership projections and recovering from a canceled initial public offering. With backing from private equity firm Fortress, the company thinks it can stitch together cities that fit a simple criteria: too long to drive, too short to fly. Think Atlanta to Charlotte, Los Angeles to San Diego, Portland to Vancouver, and Dallas to Houston. Like Bloomberg’s Evening Briefing? Subscribe to Bloomberg.com. You’ll get our unmatched global news coverage and two premium daily newsletters, The Bloomberg Open and The Bloomberg Close, and much, much more. See our limited-time introductory offer. Tune in to Bloomberg wherever you are.Download the Radio.com app so you can listen to Bloomberg Radio anytime, getting instant access to breaking news and analysis from business leaders and influencers available nowhere else. Download the Bloomberg app: It’s available for iOS and Android. Before it’s here, it’s on the Bloomberg Terminal. Find out more about how the Terminal delivers information and analysis that financial professionals can’t find anywhere else. Learn more. | 