Prof. Wendy Freedman of the University of Chicago on the tension on Hubble Constant measurements

Answering the Most Important Problem in Cosmology Today: Is the Tension in the Hubble Constant Real?  

Scientific Sense ® by Gill Eapen: Professor Wendy Freedman is Professor of Astronomy and Astrophysics at the University of Chicago. Her current projects involve measurements of the Hubble constant -- the current expansion rate, as well as the past expansion rate, providing constraints on the acceleration of the universe and dark energy.