Poor air quality stemming from fires burning across Canada is again choking major American cities. Jane Park, a fire and vegetation specialist at Banff National Park in Alberta, Canada, talks about her work to help manage the fires. And, extreme temperatures are brutal on the human body. Journalist Jeff Goodell's new book, "The Heat Will Kill You First," explores what to do when "the sun feels like the barrel of a gun pointed at you." Then, the mayor of Reno, Nevada, is advocating for cities to address mental health. Hillary Schieve speaks with us about her own personal story of losing three family members during the pandemic who struggled with depression, bipolar disorder and addiction.