The discovery that could shed light on the origin of "dark matter"

Today on CNN10: We'll take a look at protests in major cities across the U.S. after a woman was killed during a confrontation with federal immigration agents in Minnesota last week. Then, we'll see how a winter snow drought is fueling water concerns in states across the Western U.S. Plus, we'll get a look at a discovery that scientists say could shed light on one of the biggest mysteries in the universe. All this and more on today's CNN10! Learn more about your ad choices. Visit podcastchoices.com/adchoices