Today on CNN10: We look at how record-setting rainfall has impacted aging subway systems in some of the US' biggest cities. Then, we get a look into one photographer's quest to snap the entire animal kingdom, one species at a time. We'll also learn what's causing a stunning wave of red auroras -- and why they may be easier to see this week. All this and more on today's CNN10!
Learn more about your ad choices. Visit podcastchoices.com/adchoices
