![cbsn-fusion-heat-wave-causing-hazards-to-health-across-us-thumbnail-2110448-640x360.jpg](https://assets1.cbsnewsstatic.com/hub/i/r/2023/07/07/8764926e-3b6e-4cde-b40d-54d69673885c/thumbnail/640x360/da0a707b76731822f270ae9bc2932bd9/cbsn-fusion-heat-wave-causing-hazards-to-health-across-us-thumbnail-2110448-640x360.jpg?v=8f1da8ceea4c14a7119ef5d6a2829966#)
Science
Millions face record-breaking heat
High temperatures over the past few days broke multiple records. On Friday alone, some 90 million Americans saw temperatures above 90 degrees Fahrenheit -- and for 45 million people it felt like temperatures were in the triple digits. CBS News senior transportation correspondent Kris Van Cleave reports from Arizona.