Phoenix expects record-breaking heat deaths; Mapping hot neighborhoods in the U.S.

In Juneau, Alaska, a glacial flood swept at least two houses into the raging river. Several other homes were damaged. Juneau's Deputy City Manager Robert Barr joins us. And, this summer's record heatwave in Phoenix that sent temperatures soaring past 110 degrees for 31 straight days will be historically deadly, according to the Maricopa County medical examiner. Here & Now's Peter O'Dowd reports from Phoenix. Then, federal government scientists are busy this summer mapping the hottest parts of 18 communities in 14 states. Teams of volunteers are fanning out to collect data that will help them better understand the impact that extreme heat has on people living in cities. Here & Now's Peter O'Dowd and Chris Bentley report from Sedona, Arizona, and Chicago, Illinois.