A sweltering heat wave has made its way across the country over the past week, in a reminder of the drastic effects of climate change that just keep getting worse. Now cities are looking for new ways to keep people cool. Plus, how the war in Ukraine is causing global hunger. And, Canada proposes new gun legislation, in the wake of American mass shootings. Guests: Axios' Jennifer Kingson and Emily Peck.Credits: Axios Today is produced by Niala Boodhoo, Sara Kehaulani Goo, Alexandra Botti, Nuria Marquez Martinez, Alex Sugiura, and Lydia McMullen-Laird. Music is composed by Evan Viola. You can reach us at podcasts@axios.com. You can text questions, comments and story ideas to Niala as a text or voice memo to 202-918-4893.Go deeper: Food protectionism is on the rise For cities, staying cool is the hot new thing Canada poised to pass sweeping gun restrictions in wake of Uvalde and Buffalo Monarch butterflies see resurgence in Mexico