Focus

Focus, or Focus 580, was WILL Radio's flagship talk program from 1981 until 2014. David Inge was the host from 1981 until his retirement in 2012. Always engaging, the program acted as a resource for citizens to directly question politicians and candidates as well as keep up on the arts, science, health, and even the latest from well-known novelists.

The Focus archive below offers thousands of great interviews and serves as a time capsule and a great resource for researchers and those just curious about how influential people spoke of important topics as they were happening.

The Snowball Earth Hypothesis: Testing the Limits of Global Change

Guest: Paul Hoffman.

Some scientists believe that at one time in the past, Earth became so cold it completely froze over. This period of extreme cold was followed by a dramatic swing to warmth, which may have had a profound impact on the development of complex life on our planet. Other scientists disagree, questioning the Earth's ability to thaw and the survival of any life of its surface. Today on Focus, host David Inge talks to Paul Hoffman, professor of geology at Harvard University and one of the leaders of the "Snowball Earth" hypothesis.