A coalition of wealthier countries have promised that they'll provide $100 billion each year to help developing countries tackle climate change. So far, most haven't delivered on their promises, and it's a huge point of contention in the talks in Glasgow right now. Today on the show, NPR climate correspondent Lauren Sommer reports on how it looks when one country does get help, and how much more is needed for climate equity.Email the show at shortwave@npr.org.