The science behind why we sweat

Today on CNN10: We get an update on where key parts of the federal government stand following the end of a record 43-day-long shutdown. Then, we'll see how a team of scientists in Arizona is using innovative techniques to study how and why we sweat. Plus, We'll take a look at the surreal scenes that filled much of the night sky this week, and learn what was behind them. All this and more on today's CNN10! Learn more about your ad choices. Visit podcastchoices.com/adchoices