Tester: I Can Say Climate Change Is Happening 'from Real Life,' 'I Don't Know about Statistically'

On Monday's broadcast of CNBC's "Squawk Box," Sen. Jon Tester (D-MT) responded to a question on whether he can provide numbers showing that carbon emissions are increasing the frequency or severity of droughts or floods by saying, "I don't know about statistically, but from real life, I can tell you that it's happening."