Maddow: ‘Since 1989’ There’s Been Six ‘100-Year Storms in Houston’ Due to Climate Change

EXCERPT:

MADDOW: “Professor Blackburn, I read in ProPublica that since 1989, what they call a 100-year storm, a storm that’s only supposed to happen once in 100 years, since 1989 that’s happened six times in Houston. Are you saying this isn’t just a Houston issue, this is a climate change issue in terms of how we anticipate the magnitude of storms and flooding?”