How much is climate change fueling intense heat across the world?

The heat is on for Minnesota this week and heat waves are making news across the world.Hospitals in Phoenix are treating burn patients from sizzling pavement. Tourists in Greece are evacuating fire zones.How can scientists gauge when heat events are normal and when they’re fueled by climate change?Climate Central chief meteorologist Bernadette Woods Placky talks about a tool she uses called the Climate Shift Index.